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Service Interruption

Microsoft Office 365 Application Issues

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  • Start:

  • End:

  • Reason: Caching infrastructure at Microsoft was not performing as expected.

  • Services impacted: Microsoft 365

  • Impact Tier: 1- Most Critical

  • Status State: Resolved

Microsoft addressed hardware and configuration issues to bring service back to normal parameters.

Microsoft has acknowledged issues with some users ability to access Office 365 web-based applications and/or degradation of service.

 

Some users may be unable to view or access web apps in Microsoft 365

ID: MO544165

  

 

Status

Service Degradation

  

 

Impacted services

Microsoft 365 suite, Planner, Microsoft Teams, Microsoft 365 for the web

  

 

Details

Title: Some users may be unable to view or access web apps in Microsoft 365

User impact: Users may be unable to view or access web apps in Microsoft 365.

More info: Users may also be unable to access Microsoft 365 web apps through Microsoft Planner. Additionally, users may be unable to access the Microsoft Teams admin center.

Current status: Analysis of diagnostic data has identified an unusually high number of timeout exceptions within our caching and Azure Active Directory (AAD) infrastructure. We’re working to isolate the cause of these exceptions whilst identifying steps to remediate impact.

Scope of impact: Impact is specific to some users who were served through the affected infrastructure attempting to view or access web apps in Microsoft 365.

Start time: Thursday, April 20, 2023, at 12:38 AM UTC

Root cause: A section of caching infrastructure is performing below acceptable performance thresholds.

Next update: Thursday, April 20, 2023, at 3:30 PM UTC