Microsoft 365 Alert : Service Degradation – Microsoft 365 suite – Users are unable to sign into Microsoft 365 desktop applications and encounter errors – RESOLVED

23/08/2022 09:10:00 AM (BST)

Microsoft Reference : MO417675

Issue Status : RESOLVED

Issue Description : Users were unable to sign into Microsoft 365 desktop applications and encounter errors.

More Info : Users were unable to sign into Microsoft 365 desktop applications and encounter errors.

Final Update : 30/08/2022 09:55:00 AM – Microsoft has identified that the impact described in MO414814 in your Service Health Dashboard may be the result of a third-party plugin issue within the Tenable/Nessus vulnerability assessment tool, the details of which are published in the Tenable knowledge base article below. Please follow the instructions in the Tenable article to mitigate the impact for your users:

https://community.tenable.com/s/article/Plugin-Updates-to-Address-Windows-Scan-Targets-being-left-unable-to-connect-to-Azure-Active-Directory-AAD

Additionally, Microsoft has published a supplementary article detailing additional guidance that users may implement to resolve the issue for their affected users at scale or on a device-by-device basis:

https://docs.microsoft.com/en-us/microsoft-365/troubleshoot/authentication/unable-sign-in-m365-desktop-apps

Microsoft is closing out this communication post and consolidating our messaging under MO414814.

Next update : Further updates can be found under MO414814 for the remainder of the incident.