Forum Discussion
Unusual activity detected
I constantly get a login window under Outlook 2016 and despite having the correct password it does not work. Logging in on the web or in the iOS app, on the other hand, works. Also a new Outlook prof...
Install an advanced diagnostic tool and check this:
https://docs.microsoft.com/en-us/outlook/troubleshoot/performance/outlook-not-responding-error-or-outlook-freezes