11th December 2020

Microsoft Office 365 Services


Title: Some users in the UK may be unable to access Microsoft 365 services.

Preliminary root cause: Network traffic components weren't processing traffic as expected, which resulted in impact.

Next steps:

  • Microsoft are reviewing the service code and recent changes made within the network infrastructure to isolate the source of the issue.
  • Microsoft are analyzing performance data and trends on the affected systems to help prevent this problem from happening again.