Authentication error after Exchange Extended Protection was enabled

[Lxxrxns]

After a company I use php-ews for enabled Extended Protection, authentication now fails.

Found this on jamesiarmes' version:

jamesiarmes#621

Could it be that garethp's version is also affected? How can we fix this?

More info:

https://learn.microsoft.com/en-us/exchange/plan-and-deploy/post-installation-tasks/security-best-practices/exchange-extended-protection?view=exchserver-2019

[Carlmundo]

@Lxxrxns Did you ever find a solution for this?

[Lxxrxns]

Sadly no. No solution yet. We're trying a work-around now where we shortly disable Extended Protection when we want to sync :') and immediately turn it back on afterwards...