(Resumed) Microsoft Incident Report on Users may be unable to sign into Microsoft 365 desktop applications and encounter errors

Microsoft issued an incident report on 19 Aug 2022 (Fri) about sign into Microsoft 365 desktop applications problems.

Users Affected Users may be unable to sign into Microsoft 365 desktop applications and encounter errors
Start Time 17 Aug 2022 (Wed) 7:46 AM
End Time 3 Sep 2022 (Sat) 5:52 AM
Cause A Microsoft web account manager plugin that facilitates desktop application authentication becomes uninstalled on the affected user devices as an unintended side-effect, as described in the Tenable article linked above.
Service Affected  Multiple Microsoft 365 desktop applications are impacted, including the following:

  • Microsoft Teams desktop app
  • Microsoft Outlook desktop app
  • OneDrive for Business desktop app
  • Microsoft Excel desktop app
  • Microsoft PowerPoint desktop app
  • Microsoft Word desktop app

While Microsoft is focused on remediation, users can sign into the web, mobile, or both applications.

Final Status Microsoft has understood the impact this issue has had on users in affected organizations and, in some scenarios, continues to have on some users. We encourage those users and admins for whom the remediation steps described above are not viable to reach out to Microsoft support for further assistance.

Last update by Microsoft: September 3, 2022 5:52 AM