Microsoft ending the support for Basic Authentication access

%3CLINGO-SUB%20id%3D%22lingo-sub-1594719%22%20slang%3D%22en-US%22%3EMicrosoft%20ending%20the%20support%20for%20Basic%20Authentication%20access%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-1594719%22%20slang%3D%22en-US%22%3E%3CP%3EHi%2C%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3EWith%20regards%20to%20Microsoft%20ending%20the%20support%20for%20Basic%20Authentication%20access%20to%20exchange%20online%20API's%20for%20office%20365%20customers.%3C%2FP%3E%3CP%3EAs%20per%20these%20articles%3A%3C%2FP%3E%3CP%3E1.%26nbsp%3B%3CA%20href%3D%22https%3A%2F%2Fdeveloper.microsoft.com%2Fen-us%2Foffice%2Fblogs%2Fend-of-support-for-basic-authentication-access-to-exchange-online-apis-for-office-365-customers%2F%23%3A~%3Atext%3DModern%2520Authentication%2520is%2520a%2520more%2CEWS)%2520to%2520access%2520Exchange%2520Online.%22%20target%3D%22_blank%22%20rel%3D%22noopener%20noreferrer%22%3Ehttps%3A%2F%2Fdeveloper.microsoft.com%2Fen-us%2Foffice%2Fblogs%2Fend-of-support-for-basic-authentication-access-to...%3C%2FA%3E%3C%2FP%3E%3CP%3E2.%26nbsp%3B%3CA%20href%3D%22https%3A%2F%2Fredmondmag.com%2Farticles%2F2020%2F04%2F03%2Fbasic-authentication-exchange-online.aspx%22%20target%3D%22_blank%22%20rel%3D%22nofollow%20noopener%20noreferrer%22%3Ehttps%3A%2F%2Fredmondmag.com%2Farticles%2F2020%2F04%2F03%2Fbasic-authentication-exchange-online.aspx%3C%2FA%3E%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3EWe%20have%20applications%20that%20are%20connecting%20to%20SMTP%20Servers%20(via%20smtp.office365.com%20port%20995)%20and%20IMAP%20servers%20(outlook.office365.com%20port%20993)%3C%2FP%3E%3CP%3Eusing%20.NET%20libraries%20such%20as%20%3A%3C%2FP%3E%3CP%3E1.%26nbsp%3BSystem.Net.Mail%20from%20Microsoft.%20e.g.%20SMTPClient%3C%2FP%3E%3CP%3E2.%26nbsp%3BMailKit.Net.Imap%20from%20MIT.%20e.g.%20IMAPClient%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3EDoes%20it%20mean%20that%20our%20applications%20will%20no%20longer%20work%3F%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3CP%3E%26nbsp%3B%3C%2FP%3E%3C%2FLINGO-BODY%3E%3CLINGO-LABS%20id%3D%22lingo-labs-1594719%22%20slang%3D%22en-US%22%3E%3CLINGO-LABEL%3EDeveloper%3C%2FLINGO-LABEL%3E%3CLINGO-LABEL%3EOffice%20365%20Groups%3C%2FLINGO-LABEL%3E%3C%2FLINGO-LABS%3E%3CLINGO-SUB%20id%3D%22lingo-sub-1595281%22%20slang%3D%22en-US%22%3ERe%3A%20Microsoft%20ending%20the%20support%20for%20Basic%20Authentication%20access%3C%2FLINGO-SUB%3E%3CLINGO-BODY%20id%3D%22lingo-body-1595281%22%20slang%3D%22en-US%22%3E%3CP%3EYes.%20You%20will%20need%20to%20update%20them%20to%20support%20modern%20auth%20for%20SMTP%2FIMAP.%20Follow%20the%20EHLO%20blog%20to%20get%20details%20on%20this%3A%26nbsp%3B%3CA%20href%3D%22https%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fexchange-team-blog%2Fannouncing-oauth-2-0-support-for-imap-and-smtp-auth-protocols-in%2Fba-p%2F1330432%22%20target%3D%22_blank%22%3Ehttps%3A%2F%2Ftechcommunity.microsoft.com%2Ft5%2Fexchange-team-blog%2Fannouncing-oauth-2-0-support-for-imap-and-smtp-auth-protocols-in%2Fba-p%2F1330432%3C%2FA%3E%3C%2FP%3E%3C%2FLINGO-BODY%3E
Visitor

Hi,

 

With regards to Microsoft ending the support for Basic Authentication access to exchange online API's for office 365 customers.

As per these articles:

1. https://developer.microsoft.com/en-us/office/blogs/end-of-support-for-basic-authentication-access-to...

2. https://redmondmag.com/articles/2020/04/03/basic-authentication-exchange-online.aspx

 

We have applications that are connecting to SMTP Servers (via smtp.office365.com port 995) and IMAP servers (outlook.office365.com port 993)

using .NET libraries such as :

1. System.Net.Mail from Microsoft. e.g. SMTPClient

2. MailKit.Net.Imap from MIT. e.g. IMAPClient

 

Does it mean that our applications will no longer work?

 

 

1 Reply

Yes. You will need to update them to support modern auth for SMTP/IMAP. Follow the EHLO blog to get details on this: https://techcommunity.microsoft.com/t5/exchange-team-blog/announcing-oauth-2-0-support-for-imap-and-...