End of support for basic authentication access to exchange online Jan 26, 2020 · Microsoft has announced that "End of support for Basic Authentication access to Exchange Online API’s for Office 365 customers" is October 13th, 2020. May 9, 2024 · Guidelines for preparedness To get ready for the retirement of Basic authentication for Client Submission (SMTP AUTH) in Exchange Online, you can follow these steps: Transition to OAuth: Upgrade your applications and devices to use OAuth for SMTP Auth to enhance security with encrypted token-based authentication. We’ve protected millions of users from the risks associated with using this legacy form of authentication to access their data. Once Exchange Online disables support for Basic authentication, any connection from server-side synchronization or Email Router to Exchange Online using Basic authentication will quit working. We strongly encourage customers to move away from using Basic authentication with SMTP AUTH as soon as possible. Apr 3, 2020 · Update: The full timeline for retirement of Basic Authentication in Exchange Online is now published in Basic Authentication Deprecation in Exchange Online – September 2022 Update. Any device or application using this method to send emails must transition to OAuth 2. As part of security defaults, we currently disable Basic Authentication by default for new customers. Apr 25, 2023 · CodeTwo Admin's Blog End of life for basic authentication in Office 365 (Microsoft 365) Due to the Covid-19 pandemic, there was a huge change of plans concerning disabling basic authentication in Microsoft 365 (for connections to Exchange Online). Due to the pandemic and the effect it has on priorities and work patterns, we are announcing some important changes to our plan to disable Basic Auth in Exchange Online. You can still use the Email Notification connector with SMTP authentication for an Exchange mailbox Oct 26, 2023 · Explore other articles on this topic. It will then show whether Basic Auth or OAuth is used to send emails to Exchange Online. There is a separate effort to retire Outlook connecting to Exchange Online using Basic Authentication. Over the last few years, we have been investing in services that help developers access information in Office 365 in a simple and intuitive way, specifically through Microsoft Graph. Due to the pandemic and the effect it has on priorities and work patterns, we are Hello, The company I work for has an old web app that integrates with Exchange (online and on-premises) using ExchangeServiceBinding Proxy Class. Although SMTP AUTH is available now, we announced Exchange Online will permanently remove support for Basic authentication with Client Submission (SMTP AUTH) in March 2026. Any mailbox in Dynamics 365 configured with this type of connection will no longer be able to: Send outgoing emails from Dynamics 365 through Exchange Online Retrieve new incoming emails from Exchange Jul 28, 2020 · Exchange Online PowerShell: As we announced recently, Exchange Online PowerShell V2 module is now fully released and this is what you should use to connect using Modern Authentication. 0 authentication will be required on applications and devices when using the SMTP protocol to send emails. This change enhances security, reduces phishing risks, and aligns with Dartmouth’s security stra On October 13, 2020, Microsoft will end support for basic authentication access to Exchange Online API’s for Office 365. This relies on a username and password for access requests, which is susceptible to security issues related to brute force attacks, password spray attacks and more. Basic Authentication is an outdated method to log in to services or platforms and will no longer be supported by Microsoft at the end of 2022. Exchange Online, Exchange Online as part of Office 365, and on-premises versions of Exchange starting with Exchange Server 2013 support standard web authentication protocols to help secure the communication between your application and the Exchange server. Jun 10, 2024 · While Basic Authentication was the standard at the time, Basic Authentication makes it easier for attackers to capture user credentials, which increases the risk of those stolen credentials being reused against other endpoints or services. Please refer to the following article for more May 3, 2022 · Update: The full timeline for retirement of Basic Authentication in Exchange Online is now published in Basic Authentication Deprecation in Exchange Online – September 2022 Update. May 26, 2025 · Ricoh has been made aware of Microsoft's decision to discontinue support for basic authentication for sending emails using the SMTP protocol in Exchange Online after March 2026. Jun 14, 2025 · Back in 2022, Microsoft announced the retirement of Basic Authentication as it was moving to modern OAuth 2. It is enabled by default on most servers and services and it’s super simple to set up. It plans to end support for Basic Authentication next year when used with various e Mar 1, 2020 · So what is this Legacy/Basic and Modern Authentication exactly? When using Basic/Legacy Authentication application sends a username and password with every request to Exchange Online which either forwards the credentials towards Azure AD or a federated authentication provider like Active Directory Federation Services (ADFS). Apr 15, 2024 · Learn how to prepare your email environment for the permanent retirement of SMTP auth in Exchange online by September 2025. Microsoft Today, Microsoft is announcing that Exchange Online will permanently remove support for Basic authentication with Client Submission (SMTP AUTH) in September 2025. Sep 20, 2023 · The reasons why Exchange Online needed to eliminate basic authentication are well known, Basic authentication is the chosen route for attackers seeking to compromise user accounts. Aug 9, 2022 · Please go here to search for your product's lifecycle. Basic Authentication for EWS will be decommissioned Exchange Web Services (EWS) was launched with support for Basic Authentication. com/en-us/office/blogs/end-of-support-for-basic-authentication-access-to-exchange-online-apis-for-office-365-customers/ Suggested Solution Implement some other method of allowing Jira to authenticate to an office 365 mailbox, such as OAuth2. Apr 12, 2023 · Hi all, For those who are struggling with setting up Authenticated SMTP (SMTP AUTH over 587/TCP) on multifunctionals or webforms (that don't support modern authentication/OAuth) since the deprecation of the legacy authentication protocols this year. Microsoft 365 Administrators will need the Modern Authentication-supported PowerShell module to connect to online Exchange. My work IT department says it is no longer possible to use the native iOS email and calendar apps to access exchange/m365 accounts and point me to articles about basic auth being deprecated by Microsoft. We previously announced we would begin to disable Basic Auth for five Exchange Online protocols in the second half of 2021. Hey Guys, Microsoft announced back in 2018 that end of support was coming for Basic Authentication and we've been updated with an official date of Oct 13,2020. This method allows you to send emails without using SMTP authentication. Now with the end of support… While this removal is for the greater of good – basic authentication is not a secure way to authenticate as it can be easily hack and does not support multi-factor authentication (MFA), which is helping securing identity – this also has a downside. More details about the upcoming changes to Microsoft's products can be found in https://developer. 0 Support Microsoft is retiring Basic Authentication for SMTP in Exchange Online. Now with the end of support… Sep 22, 2022 · The administration and maintenance of Microsoft Exchange Server to ensure secure, reliable, and efficient email and collaboration services across an organization. Jun 23, 2025 · Microsoft is retiring Basic SMTP Authentication in Office 365 by September 2025. Sep 20, 2019 · Update: The full timeline for retirement of Basic Authentication in Exchange Online is now published in Basic Authentication Deprecation in Exchange Online – September 2022 Update. May 12, 2025 · A surprise announcement brings the news that the Exchange Online High Volume Email (HVE) solution will only deliver messages to internal recipients from June 2025. ・ The planned schedule for support of some products has been updated. This change will be enforced beginning March 2026, as part of a broader effort to improve cloud security by Jun 12, 2025 · Learn about the retirement of Basic Auth for Client Submission/SMTP Auth in Exchange Online as per MC786329. Azure ECS is now the sole offering for sending large volumes of email to external recipients. Customers are encouraged to move to apps that support Modern Authentication prior to the removal of Basic Authentication. POP uses couldn’t access email server last month (July May 6, 2025 · Exchange Online will block Basic Authentication for SMTP client submission beginning in Sept. Feb 26, 2020 · With Basic Authentication in Exchange Online set to lose support this fall, Microsoft on Tuesday shared details about the transition and highlighted potential hurdles for organizations. Beginning September 2025, Microsoft will retire legacy authentication methods (Basic Auth) for Exchange Online, requiring all users to transition to Modern Authentication (OAuth 2. In summary, we announced we were postponing disabling Basic Auth for protocols in active use by your Jan 19, 2023 · Customers using basic authentication to connect to Exchange on-premises/Exchange Online can continue to use basic authentication without any changes to Exchange. ” Apr 15, 2024 · Today, we are announcing that Exchange Online will permanently remove support for Basic authentication with Client Submission (SMTP AUTH) starting March 2026. May 26, 2025 · Ricoh has been made aware of Microsoft’s decision to discontinue support for basic authentication for sending emails using the SMTP protocol in Exchange Online as of September 2025. Microsoft has announced that basic authentication for sending email using the SMTP protocol in Microsoft Exchange Online will be discontinued after March 2026*. Please see Exchange Online – September 2022 Update. On May 7, 2024, we introduced OAuth2 authentication for the Microsoft 365 email Aug 11, 2022 · Dynamics 365 customers using server-side sync or the Email Router to connect to Exchange Online with Basic authentication need to act now. Effectively, Microsoft will permanently disable all basic auth protocols during Sep 23, 2019 · Microsoft upped the stakes in its effort to end "Basic Authentication" with the Exchange Online e-mail service. Why This MattersOnce Microsoft dep Oct 4, 2022 · How to use the Microsoft self-service diagnostic tool to re-enable Basic Authentication in Exchange Online Protocols like, Exchange ActiveSync, EWS, MAPI and PowerShell, which support both basic and modern authentication methods are referred as modern authentication supported protocols, in the context of this document. Jul 18, 2023 · This retirement will not affect Exchange Online and Exchange on-premises. Jun 10, 2024 · In this article, Jaap Wesselius explains the available options for SMTP relay when moving to Exchange Online. RightFax uses this basic authentication for Exchange Web Services to access Exchange Online so that users can send, receive and manage faxes directly within Office 365. Plus, Modern Authentication supports extra security features like two-factor authentication (2FA), which adds another layer of protection. Sep 30, 2025 · Update April 2024: Microsoft has published an update on their blog Exchange Online to retire Basic auth for Client Submission (SMTP AUTH) announcing they will permanently remove support for Basic authentication with Client Submission (SMTP AUTH) in September 2025. Sep 14, 2022 · Basic authentication deprecation in Exchange Online will begin on October 1, 2022, as Microsoft will block basic authentication except for SMTP protocol. Apr 4, 2024 · Introduction Effective from October 2022, Microsoft will start to randomly select tenants and disable basic authentication access for specific protocols (MAPI, RPC, Offline Address Book (OAB), Exchange Web Services (EWS), POP, IMAP, Exchange ActiveSync (EAS), and Remote PowerShell) in Exchange Online for its users. Nov 12, 2025 · Thank you for using Ricoh products and services. Nov 1, 2025 · Exchange Online will permanently remove support for Basic authentication with Client Submission (SMTP AUTH), reaching 100% rejection of such requests by April 30, 2026. For clients that still require legacy SMTP, you can opt in to Exchange Online endpoints to support legacy TLS clients that use SMTP AUTH. Aug 20, 2025 · Microsoft will retire Basic Authentication for SMTP Auth in Exchange Online, requiring all email-sending applications, devices, and legacy email clients to transition to Modern Authentication (OAuth). Jul 29, 2024 · In September 2024, the SMTP AUTH report for client delivery will be updated in the Exchange Administration Center. "Today, we are announcing that on October 13th, 2020 we will stop supporting and retire Basic Authentication for Exchange Active Sync (EAS), Post Office Protocol (POP), Internet Message Access Protocol (IMAP), and Remote PowerShell (RPS Dec 20, 2022 · Microsoft warned today that it will permanently turn off Exchange Online basic authentication starting early January 2023 to improve security. Nov 2, 2022 · View image in new tab Note: Exchange Online team is working on deprecating Basic Authentication separately, Outlook will continue to support Basic Authentication with Exchange Online till that work is complete. Here are the prerequisites: A user with a mailbox (At least a Exchange Online P1 license) SMTP AUTH has to be enabled at the user- or tenantlevel Jul 3, 2018 · Update: For latest information related to basic authentication in Exchange Online, please see Basic Authentication and Exchange Online – September 2022 Update. Learn how to switch to OAuth and keep your business emails secure and uninterrupted. Jan 3, 2020 · End of support for Basic Authentication access to Exchange Online API’s for Today, we are announcing that on October 13th, 2020 we will stop supporting and retire Basic Authentication for Exchange Active Sync (EAS), Post Office Protocol (POP), Internet Message Access Protocol (IMAP), and Remote PowerShell (RPS) in Exchange Jun 12, 2025 · Learn about the retirement of Basic Auth for Client Submission/SMTP Auth in Exchange Online as per MC786329. On the upside, HVE will support basic authentication until September 2028 to give tenants the chance to upgrade devices and apps. Oct 24, 2025 · Keep in mind that BitTitan only supports Modern Authentication for Microsoft 365 endpoints used for Mailbox, Online Archive mailbox, and Public Folder migrations. Jul 9, 2025 · Announcing new resources for moving to Modern Authentication Deprecation of Basic authentication in Exchange Online Learn about deprecation of Basic authentication in Exchange Online Use of Basic authentication with Exchange Online - Power Platform Article discusses the impact of the deprecation of Basic authentication. Jun 14, 2025 · The deprecation process for Exchange Online began in 2019, with most protocols transitioning to Modern Authentication (OAuth 2. Nov 25, 2024 · Here are some suggestions that may help: You can configure your local system to use Office 365's SMTP trunk. Beginning October 1, 2022, Exchange Online Basic Auth will begin to be permanently disabled in all tenants. After this time, applications and devices will no longer be able to use Basic auth as an authentication method and must use Exchange Hybrid and Office 365 Monitoring and Reporting On-premises components, such as AD FS, PTA, and Exchange Hybrid are critical for Office 365 end user experience. Since we announced the October 1, 2022 deadline last year Jan 6, 2023 · And does this endpoint support basic authentication? I currently have a number of mailboxes utilizing IMAP on an on-prem Exchange server as the application using them doesn't support modern authentication. By transitioning to modern authentication, you not only comply with Microsoft’s policies but also enhance your digital security. Apr 10, 2020 · End of support for Basic Authentication access to Exchange Online API’s for Today, we are announcing that on October 13th, 2020 we will stop supporting and retire Basic Authentication for Exchange Active Sync (EAS), Post Office Protocol (POP), Internet Message Access Protocol (IMAP), and Remote PowerShell (RPS) in Exchange Sep 1, 2022 · Starting on October 1st, 2022 we’re going to start to turn off basic authentication for specific protocols in Exchange Online for customers that still use it. In February 2021, we announced some changes to our plan for turning off Basic Authentication in Exchange Online. Modern Authentication provides a more secure authentication mechanism for registered applications to connect to Microsoft Entra ID and Microsoft 365. Hi, Microsoft statement is, that SMTP Auth via Basic auth will be retired in September 2025. After this date, applications and devices will no longer be able to use Basic Auth as an authentication method. Oct 26, 2022 · Learn how to secure your Exchange Online environment by upgrading to modern authentication. The app will soon be retired, but it's still used by some of our customers. Likewise, disabling Basic Authentication on its own may not disable “enough” protocols. Learn more in this Microsoft documentation. The following table lists the Office versions that are supported for connecting to Microsoft 365 services. Microsoft has announced the end of Basic Authentication for sending email via Microsoft 365 in early 2026. Duo will continue supporting basic authentication use cases in alignment with Microsoft. After multiple changes in the timeline, basic authentication almost reached its end of life. It will end support for Basic Authentication for Exchange Web Services (EWS), Exchange ActiveSync (EAS), Internet Message Access Protocol (IMAP), Post Office Protocol (POP), and Remote PowerShell (RPS) in Exchange Online on October 1, 2022. Jan 3, 2020 · End of support for Basic Authentication access to Exchange Online API’s for Today, we are announcing that on October 13th, 2020 we will stop supporting and retire Basic Authentication for Exchange Active Sync (EAS), Post Office Protocol (POP), Internet Message Access Protocol (IMAP), and Remote PowerShell (RPS) in Exchange End of Basic Authentication for Microsoft Exchange Online & Transition to OAuth 2. 437 votes, 177 comments. Jul 28, 2020 · Exchange Online PowerShell: As we announced recently, Exchange Online PowerShell V2 module is now fully released and this is what you should use to connect using Modern Authentication. Following this change, OAuth 2. If you disable basic authentication globally, this would effectively kill POP and IMAP since those protocols do not support modern authentication–they rely exclusively on basic/legacy auth. Sep 1, 2022 · Microsoft is turning off Basic Authentication in Exchange Online for all tenants. The first change is that until further Oct 1, 2022 · Microsoft announced the deprecation of Basic Authentication for legacy protocols: Exchange Active Sync (EAS), Post Office Protocol (POP), Internet Message Access Protocol (IMAP), and Remote PowerShell (RPS) in Exchange Online. Referring to this… Microsoft set October 1, 2022 as the deadline to retire Basic Authentication for Exchange. 3 days ago · SEATTLE, WA — The Microsoft Corporation announced today that they've developed a convenient new 47-factor authentication protocol for all Windows-enabled computers. Dec 28, 2022 · Three years ago, Microsoft announced its plans to deprecate Basic Authentication support in favor of secure user authentication techniques. Over time, we’ve introduced OAuth 2. May 6, 2025 · As part of our last Public Preview update in October, OAuth support for HVE was added, and we encourage you to start planning your migration to OAuth to benefit from its enhanced security features. Feb 7, 2025 · Retirement of RBAC Application Impersonation in Exchange Online and a step-by-step plan for transition to modern auth/permissions for stronger security. Nov 1, 2018 · Steve Goodman writes on how you can use Authentication Policies in Exchange Online for blocking Basic Authentication in your Exchange Online tenant. What gives? Feb 2, 2024 · Authentication is a key part of your Exchange Web Services (EWS) application. Stay updated with the latest changes. If you haven’t started preparing for this change, now is the time to act. Jul 1, 2022 · As you are probably aware Microsoft has been removing basic authentication capabilities in Office 365 services, which includes connectivity using ‘legacy’ protocols like IMAP, POP or SMTP. 0 for authentication and authorization, which is a more secure and reliable way than Basic Authentication to access data. Customers starting now should rely on Nov 18, 2024 · Description Google and Microsoft deprecated basic authentication for their email services in 2022. Customers must update end The company is now taking a more forceful approach. Exchange Online troubleshooting This library of articles provides guidance to troubleshoot and fix errors that you may experience when using Exchange Online. Jul 29, 2024 · Microsoft will permanently remove support for Basic Authentication with Client Transmission (SMTP AUTH) in Exchange Online in September 2025. Any mailbox in Dynamics 365 configured with this type of connection will no longer be able to: Send outgoing emails from Dynamics 365 through Exchange Online Retrieve new incoming emails from Exchange Jun 17, 2025 · Impact of Microsoft basic authentication deprecation in Exchange Online and support for affected RICOH fi and SP Series products Update: July 23, 2025 ・ The discontinuation date has been revised (from September 2025 to March 2026) to reflect the change as of June 11, 2025. 2025, cutting off some devices and applications unless customers take action. microsoft. Application administrators and users must take action to update configurations before the A very short summary: All previous opt-outs and re-entablements of basic authentication are not valid anymore If you want to keep using basic auth in Exchange Online after October 1st, you must explicitly opt-out in September Basic auth is getting disabled for any protocols not opted-out during September, starting October 1st Aug 6, 2022 · Microsoft will begin disabling Basic authentication after October 1, 2022, can we turn back on Basic authentication after disabled? Then we may upgrade Exchange Online Kiosk to Online Plan 1 license for these users and change to use exchange protocol instead on POP protocol next year. Every day that you’re still using Basic Authentication, you run the risk of being attacked. Jun 20, 2022 · Many companies are still using Basic Authentication for Exchange Online. Modern Authentication is the only path forward for the existing Exchange Online customers that use Basic Authentication. […] May 24, 2023 · Exchange Online will permanently remove support for Basic authentication with Client Submission (SMTP AUTH), reaching 100% rejection of such requests by April 30, 2026. Last year we announced changes to make Exchange Online more secure, and earlier this year we provided some updates on progress. At potential risk are devices such as mail-enabled document scanners and multifunction printers offering “scan to mail. Aug 31, 2022 · In September of 2019, Microsoft announced that they would retire Basic Authentication for services that access Exchange Online from October 13th 2020. Microsoft Graph and the use of OAuth 2. The change will cut off some mail-enabled document scanners and other devices and applications if organizations do not respond. Aug 23, 2024 · Exchange Online will permanently remove support for Basic authentication with Client Submission (SMTP AUTH) in September 2025. Applications and devices will no longer be able to use Basic Authentication when using Client Submission (SMTP AUTH) to send email via Exchange Online. May 8, 2025 · Exchange Online will block Basic Authentication for SMTP client submission beginning in Sept. Access to all other resources using Basic Authentication will be blocked in Outlook Version 2209 and higher. Jun 17, 2025 · Update: As reported by Microsoft, end of support for Basic SMTP authentication will now begin on March 1st, 2026, and reach 100% rejections on April 30th, 2026 (previously September 2025). Not true. This article discusses the basic Authentication, Microsoft's update on the Authentication method, and actions required by INSZoom Case Managers, Firm Admins and IT/ Microsoft administrators of your Firm. 2025. By April 2026, Microsoft will end support for Basic SMTP authentication for cloud-based Exchange servers (Exchange Online). Mar 7, 2025 · Although SMTP AUTH is available now, we announced Exchange Online will permanently remove support for Basic authentication with Client Submission (SMTP AUTH) in September 2025. Feb 5, 2021 · We previously announced we would begin to disable Basic Auth for five Exchange Online protocols in the second half of 2021. . 0 for continued functionality. In addition, something as trivial as expiring Exchange or AD FS certificates can certainly lead to unexpected outages. For many years, client apps have used Basic Authentication to connect to servers, services and endpoints. Customers using basic authentication to connect to Exchange on-premises/Exchange Online can continue to use basic authentication without any changes to Exchange. By proactively monitoring hybrid components, ENow gives you early warnings where hybrid components are Hello, The company I work for has an old web app that integrates with Exchange (online and on-premises) using ExchangeServiceBinding Proxy Class. On the other hand, it seems that iOS native email supports oAuth and advanced authentication for quite a while. Please read this post carefully, as there’s a lot of detail. To decide how to respond, customers should weigh security, cost, reliability, and reach to recipients outside the organization. Mar 19, 2020 · Microsoft announced that it will stop supporting Basic Authentication-based connections to Exchange Web Services (EWS) to access Exchange Online on October 13th, 2020. How To Note: Microsoft began turning off basic authentication in Exchange Online in January 2023. Nov 2, 2023 · POP3 and IMAP4 provide access to the basic email features of Exchange Online and allow for offline email access, but don't offer rich email, calendaring, and contact management, or other features that are available when users connect with Outlook, Exchange ActiveSync, Outlook on the web (formerly known as Outlook Web App), or Outlook Voice Access. Microsoft started this shift away from Basic Authentication years ago, and by September 2025, SMTP Basic Authentication will be fully retired in Exchange Online. 0 provide Nov 16, 2022 · Last month we turned off Basic auth in Exchange Online for many customers. For a complete list of articles, browse the navigation pane on the left, or use the search box above the pane to filter by keywords and find help with a specific issue. In response to the COVID-19 crisis and knowing that priorities have changed for many Clients that don’t support modern authentication will no longer be allowed to access Microsoft 365 over basic authentication. Basic Authentication is being disabled for Outlook, Exchange Web Services (EWS), Remote PowerShell (RPS), POP, IMAP, and Exchange ActiveSync (EAS) protocols in Exchange Online to improve customer security. Sep 23, 2021 · Update: The full timeline for retirement of Basic Authentication in Exchange Online is now published in Basic Authentication Deprecation in Exchange Online – September 2022 Update. Jun 23, 2020 · In the second half of 2021, Microsoft will end support for basic authentication for several protocols to access Exchange Online; including the IMAP/POP3 protocols used by Pega's email listener (See Microsoft announcement here). Apr 3, 2020 · Hi, With regards to Microsoft ending the support for Basic Authentication access to exchange online API's for office 365 customers. As of today (November 2022), the E-Mail Notification Connector in conjunction with Exchange Online continues to support Basic Authentication only. Apr 26, 2024 · Today, we are announcing that Exchange Online will permanently remove support for Basic authentication with Client Submission (SMTP AUTH) in September 2025. In about 150 days from today, we’re going to start to turn off Basic Auth for specific protocols in Exchange Online for those customers still using it. 0 token-based authentication. Sep 30, 2022 · This article provides information on actions that must be taken to ensure Veeam Backup for Microsoft 365 will continue to function after the Basic Authentication Deprecation in Exchange Online. Mar 3, 2023 · Note: Exchange Online team is working on deprecating Basic Authentication separately, Outlook will continue to support Basic Authentication with Exchange Online till that work is complete. Customers can implement Modern Authentication today. In January 2025, Microsoft plans to send a Message Center post to tenants using Basic Auth with Client Submission (SMTP AUTH). We recommend switching to Modern Authentication. This change enhances security, reduces phishing risks, and aligns with Dartmouth’s security strategy. Details On October 13, 2020, Microsoft will end support for basic authentication access to Exchange Online API’s for Office 365. 0). After this time, applications and devices will no longer be able to use Basic auth as an authentication method and must use OAuth when using SMTP AUTH to send email. Jun 14, 2025 · Microsoft has an update for Office 365/Microsoft 365 Exchange Online Basic Auth retirement in the case of SMTP. May 10, 2022 · Microsoft modern authentication deadline looms over Exchange Support for basic authentication will end this year, giving administrators who haven't switched to a newer authentication method little time to prepare for a smooth transition. Basic The footnote says: Connecting an Office 365 E1, Microsoft 365 Business Basic, Microsoft Exchange Online P1 or P2 to Outlook for Windows, classic Outlook for Windows, and Outlook for Mac requires that those applications first be licensed with an account that includes the rights to Microsoft 365 desktop apps. Sep 28, 2022 · Effective October 1, 2022, Microsoft is deprecating the ability to use basic authentication for Exchange Online. Duo recommends that you update to clients that support modern authentication. As per these Nov 4, 2020 · End of support for Basic Authentication in Exchange Online and ways to downgrade organization's security for soon to be retired web application Asked 4 years, 3 months ago Modified 4 years, 3 months ago Viewed 194 times The goal of creating a “block” policy is to deny access to clients that rely on legacy authentication protocols which only support Basic Authentication irrespective of location and device platform. For example, connecting to Exchange Online, SharePoint Online, or OneDrive. Now with the end of support… Feb 4, 2021 · Update: The full timeline for retirement of Basic Authentication in Exchange Online is now published in Basic Authentication Deprecation in Exchange Online – September 2022 Update. We have also recently announced the preview program which will allow you to run PowerShell scripts with Modern Authentication (using certificates). Following this change, OAuth2. Q2. However, SMTP AUTH was granted an extended timeline due to its widespread use in applications and devices for sending emails. Here are the prerequisites: A user with a mailbox (At least a Exchange Online P1 license) SMTP AUTH has to be enabled at the user- or tenantlevel Feb 10, 2023 · Hi team, now that basic authentication is blocked, will this mean that i can't purchase anymore exchange online kiosk licenses? or this means no i still can purchase these licenses but i need to use outlook on the web to access the emails and i cant use… Jul 3, 2018 · Update: For latest information related to basic authentication in Exchange Online, please see Basic Authentication and Exchange Online – September 2022 Update. Modern authentication methods (such as OAuth) provide a more secure and robust authentication mechanism compared to Basic Authentication. Sep 20, 2019 · Basic Authentication is superseded by Modern Authentication (based on OAuth 2. Feb 6, 2025 · The deprecation of Basic Authentication in SMTP for Exchange Online is a crucial step towards a more secure digital ecosystem. Both companies consider Basic authentication as an outdated industry standard, and thus they are suggesting its customer move to OAuth 2. 0 token-based authorization. 0 authentication will be required to send emails using SMTP authentication through Exchange Online. Apr 14, 2025 · Microsoft is making a significant change that could impact your OpCon environment. Nov 4, 2020 · Hello, The company I work for has an old web app that integrates with Exchange (online and on-premises) using ExchangeServiceBinding Proxy Class. Microsoft will retire Basic Authentication for SMTP Auth in Exchange Online, requiring all email-sending applications, devices, and legacy email clients to transition to Modern Authentication (OAuth). Basic Authentication for Exchange Active Sync (EAS), Post Office Protocol (POP), Internet Message Access Protocol (IMAP), and Remote PowerShell (RPS) in Exchange Online is affected. What will Microsoft do? From October 1, 2022, Microsoft will Jun 17, 2025 · Update: As reported by Microsoft, end of support for Basic SMTP authentication will now begin on March 1st, 2026, and reach 100% rejections on April 30th, 2026 (previously September 2025). Greg said that 99% of password spray attacks against Microsoft 365 use basic authentication and that more than 1,000 such attacks occur every second. While this removal is for the greater of good – basic authentication is not a secure way to authenticate as it can be easily… Dec 19, 2019 · If you’re still using on-premise Office servers, like Exchange, you won’t lose access as the new authentication rules only apply to cloud-hosted Office services. 0) by late 2022. ryqdrlp vkzazih dwalex dkb btzibdma gvdq oeshg bkqd explgx rfrou fkdt edpeka ndfkmi jycfh jcxhqlpq