Microsoft 365 Users Experience Outlook ‘Issue’ as Fix Starts to Roll Out

Some European Microsoft 365 users started the week this morning without access to Microsoft 365 services. Microsoft said on X that was investigating an issue impacting users accessing Exchange Online and some functionality in Microsoft Teams calendar.

The issue mostly appeared to affect users trying to access Outlook through the web browser. Although, some users were also having issues connecting to Microsoft’s servers and logging into Microsoft 365.

Fix for November 25 Microsoft 365 Outlook issues rolling out now

A few hours later, Microsoft updated X, saying a recent change had resulted in the issue users were experiencing this morning. Microsoft started reverting the change and investing whether anything else needed to be done to restore normal service.

An hour ago, Microsoft released another update, saying that the fix is still rolling out through the effected environment. But in the meantime, engineers were beginning manual restarts on some machines that were in ‘an unhealthy state’. Microsoft redirected admins to MO941162 in the Admin Center.

The Admin Center post says the following services are affected:

• Outlook on the Web
• Outlook desktop client
• Representational State Transfer (REST)
• Exchange ActiveSync (EAS)