Many of my customers move to the cloud in the last recent years. This means for existing environments a start of a journey away from on-prem system going forward to cloud environments. We all know a journey starts with preperation and needs different steps and is always not a good idea to work on all systems together. But on the other hand, same system still exists in there old way and use sometimes old, unsecure protocols for communication and authentication.
To adress this issues Microsoft announce Septemper 2019 in a blog article “Improving security” the disabling of support for Basic authentication for the protocols like EWS, POP, IMAP and Remote Powershell. After the plan the corona crisis came up and Microsote decided to postpone the disabling of the noted protocols.
In September 2021 Microsoft released new information about this in the article “Basic authentication and Exchange Online” including some updated information. Microsoft will disable basic authentication beginning 1st of October 2022 for all protocols except SMTP auth. This means the following protocols will be disabled:
- Exchange Web Services (EWS)
- Exchange ActiveSync (EAS)
- POP
- IMAP,
- Remote PowerShell
- MAPI
- RPC
- OAB