We are now happy that this issue has been fully resolved by Microsoft as there have been no further issues over the weekend. We apologise for the inconvenience this may have caused.
Microsoft have identified the issue and have implemented a fix. They are now monitoring the service to confirm the resolution. We apologise for the inconvenience caused.
Some users in the United Kingdom may be unable to access Microsoft 365 services.
More info: Users who were able to access the service may have experienced degraded performance.
Impacted services include, but were not limited to:
OneDrive for Business
Microsoft 365 admin center
Scope of impact: Impact appears to be limited to users located in the United Kingdom.