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Microsoft Teams: Microsoft 365 (incl. Teams) status: Service degradation
Timeline of updates
- investigating
User impact: Users may be unable to connect to multiple Microsoft 365 services.
More info: Potentially impacted services include:
- Exchange Online
- Microsoft Teams
- SharePoint Online
- Microsoft Copilot 365
- Microsoft Defender XDR
Current status: We're aggressively pursuing all pathways to reduce impact. As a precaution, we've paused all deployments and configuration changes while we review recent changes for any correlation to this event. We've determined that the elevated load isn't driven by an overall increase in traffic, but by a large number of servers being unexpectedly unavailable, which is shifting load onto the remaining infrastructure. We're investigating what's causing these servers to become unavailable while we work to safely return them to service.
Scope of impact: This issue may affect users attempting to access the affected Microsoft 365 services.
Next update by: Thursday, November 12, 2026, at 10:00 PM UTC
Changes Rewindex caught on this incident
- Incident silently edited: Microsoft 365 (incl. Teams) status: Service degradation
- Incident updated: Microsoft 365 (incl. Teams) status: Service degradation
Archive proof
Rewindex commits each version of an incident it captures to a daily checkpoint, chains it to the day before, and has the checkpoint timestamped by FreeTSA and DigiCert. That proves these records existed by then and have not been changed since, by anyone, Rewindex included.
How the archive is checked, and what it cannot prove.
First version captured
In the 2026-11-12 checkpoint, timestamped by FreeTSA and DigiCert on . Record hash
aa53f2a202058f88…Version 2 captured
In the 2026-11-12 checkpoint, timestamped by FreeTSA and DigiCert on . Record hash
15a09882b06fe85a…Version 3 captured
In the 2026-11-12 checkpoint, timestamped by FreeTSA and DigiCert on . Record hash
d0aef814a8acdf99…
Impact, status and times are the vendor’s own, as last archived.
Cite this
Status incident (vendor impact label: minor) posted by Microsoft Teams, started 2026-11-12 19:30 UTC, resolved after 1.1 h, 1 update(s); edited after publishing.
- Title
- Microsoft 365 (incl. Teams) status: Service degradation
- Vendor
- Microsoft Teams
- Date
- URL
- https://rewindex.com/company/microsoft-teams/incidents/18df85d96cc0b460
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