Post Incident Review (PIR) – Azure Resource Manager – Service management failures affecting Azure in China
At a glance · Microsoft's status
ResolvedLasted 9 h 10 min
- Microsoft says it started
- · on Azure Status
- Earliest version we archived
- · our archive started 15:10 UTC
- Ended
- · marked resolved
- Edited
- Not since we first saw it
- Source
- Azure Status · checked 6 min ago
In short
Microsoft reported degraded service affecting Azure, starting 22:50 UTC on 8 Dec 2025. Microsoft marked it resolved at 08:00 UTC on 9 Dec 2025 after 9 h 10 min. Microsoft has since published a post-incident report.
Microsoft says
Microsoft's latest update, , in short excerpts.
What happened?
Timeline
Times in UTC, Microsoft's own where it gives them.
8 Dec 2025
MicrosoftMicrosoft says it startedon Azure Status
9 Dec 2025+9 h 10 min
MicrosoftResolved
13 Nov+339 days 16 h
MicrosoftEarliest version we archivedOur archive started 15:10 UTC; earlier versions were not recorded.
What Microsoft changed
Microsoft rewrites incident updates in place. We save every version (checked every minute) and list what changed. Quotes are short excerpts. The full current text is on Microsoft's page.
One version so far. If Microsoft edits it, each change shows here with what was removed and added.
First version we captured ·
As first seen: Post Incident Review
- Status
- Post Incident Review
Seen by us · Microsoft's page
Last updated