Microsoft 365 - issue with accessing 365 apps for the web

Microsoft posted a final update at 14:27 :

"We’ve confirmed after a period of monitoring service telemetry that the issue is now resolved."

Thanks for your patience while this was being progressed.

Further update from Microsoft at 13:55

"The deployment of the fix has successfully completed and we’re monitoring service telemetry to ensure the issue is fully resolved."

We'll keep this post in 'recovering' status until Microsoft fully resolve their incident.

The web versions of the 365 apps do now appear to be functional via office.com

Further update from Microsoft at 13:10

"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."

Microsoft's next update due at 15:30

Workaround / advice provided below still applies.

Microsoft have posted an update at 11:53:

"We’re focusing our investigation on token generation within our authentication infrastructure. In parallel, we’re reviewing recent changes to determine the root cause."

Microsoft's next update is due by 13:30 GMT.

As this is an issue for Microsoft to resolve - a potential workaround would be to use the Desktop version of the Office apps - either on a staff, PC Classroom or Library PC.

Exams/Assessments: If this is impacts one of your live online exams or an assessment submission - please advise the Exam Office or Assessment team as soon as possible.

Microsoft have posted an incident on their status page this morning:

Impact: Users in Europe may be unable to access their Microsoft 365 apps for the web

More info: Users may see the following message when attempting to view or access their Microsoft 365 applications using a web browser:

'We're experiencing a service outage. All of your open files have been saved. It may be some time before the outage is resolved'

Microsoft Reference: OO953223

Microsoft plan to provide a further update by 12:30 GMT - which we will add here.

If you have any questions - please contact the IT Service Desk