Hundreds of users are having problems accessing Microsoft services including Outlook and Teams.
The company said they were experiencing ‘service degradation’ but believed they had identified the problem, although it could take hours to fix.
Issues are affecting Microsoft 365, the subscription software formerly called Office 365.
Posting on DownDetector, which monitors outages, one user wrote: ‘CANNOT ACCESS IMPORTANT DOCUMENTS. VERY FRUSTRATING.’
Microsoft’s official status account on X wrote: ‘We’re investigating an issue where some users may be unable to access Microsoft 365 apps for the web.
‘We’re reviewing service monitoring telemetry to isolate the root cause and develop a remediation plan.
‘While we focus on identifying the root cause, as a workaround, users may be able to access their Microsoft 365 apps and documents via the desktop applications. For more information, please refer to OO953223 in the admin center.’
One user replied: ‘Ah, I see Microsoft is having its regularly scheduled outage…’
Another told them: ‘I’m having problems with Sharepoint, I’m not able to apply permissions to folders, security groups and people. Sometimes it doesn’t even search for the group, or doesn’t even save the changes made to folder access.’
Microsoft said in their status update page: ‘We’ve disabled proactive caching to provide some relief.
‘In parallel, we’ve tested and deployed a fix, which we believe will remediate impact. We anticipate that the fix will take approximately two hours to complete.’
Earlier this year, Microsoft users were hit with a catastrophic outage due to a flawed update by software company Cloudstrike affecting their desktops.
It saw planes grounded, ambulances delayed, banks unable to process payments, and office workers worldwide seeing the ‘blue screen of death’ in an incident so severe it was feared to be a cyber attack.
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