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OneDrive outage, 12-13 November 2026
OneDrive is one of the Microsoft products hit by the Microsoft 365 outage that began on Thursday 12 November 2026 (Microsoft incident MO1550821). Microsoft's own words for OneDrive: Microsoft lists OneDrive among the services affected for personal accounts.
What Microsoft says about OneDrive
We're pursuing multiple workstreams to pinpoint the source of the issue and ensure the recovery of the affected environment. This issue impacts Outlook.com, OneDrive, OneNote, Microsoft To Do, Teams, and Microsoft 365 for the web although you may also see issues in other Microsoft 365 services.
Microsoft's overall status: "Users may be unable to connect to multiple Microsoft 365 services", rated service degradation. Features of the Microsoft 365 services below that interact with Exchange Online and email services are impacted. Elements of those services that do not depend on interaction with Exchange Online remain functional.
What still works
- Features of OneDrive that do not need Exchange Online, Microsoft's email and calendar service, keep working, Microsoft says.
What you can do
- Files synced to your computer stay on your computer and open as normal; new changes upload once the service recovers.
- Microsoft named OneDrive on its consumer status for personal accounts. For work accounts it says files in SharePoint Online (where work OneDrive files live) largely work.
What caused it
Microsoft has not published a root cause yet. In its updates it said a core process on the affected servers was overwhelmed, causing a loss of capacity; it later identified that process as the one handling secure connections, reverted a recent network configuration change and applied a patch to an upstream authentication and routing component. Its latest update: "We're seeing positive results for server stability after applying an upstream authentication/routing configuration component patch to a portion of our infrastructure." On security: "As of now, we are not aware of any malicious activity that is causing this incident." Microsoft has promised a post-incident report.
Timeline
Thu, Nov 12
14:45 UTC
9:45 a.m. ET
An earlier, separate Teams incident (TM1550488) hits users in North and South America; Microsoft blames "resource contention" and resolves it at 15:53 UTC. It has not said whether it is linked.
Thu, Nov 12
17:39 UTC
12:39 p.m. ET
Outlook problem reports start climbing on Downdetector.
Thu, Nov 12
17:54 UTC
12:54 p.m. ET
Microsoft 365 Status first posts about problems accessing Exchange Online mailboxes through multiple connection methods in the Americas (incident EX1550543).
Thu, Nov 12
18:07 UTC
1:07 p.m. ET
Microsoft says users in any region may be affected.
Thu, Nov 12
18:26 UTC
1:26 p.m. ET
Microsoft opens the wider incident MO1550821: users may be unable to connect to multiple Microsoft 365 services.
Thu, Nov 12
18:27 UTC
1:27 p.m. ET
Over the next hour and a half Microsoft reports elevated load and servers becoming unexpectedly unavailable. It pauses deployments, restarts servers and bypasses a health check component.
Thu, Nov 12
22:03 UTC
5:03 p.m. ET
Microsoft says a core process on affected servers is becoming overwhelmed, causing capacity loss.
Thu, Nov 12
22:58 UTC
5:58 p.m. ET
Partial recovery: some servers are back and stable.
Fri, Nov 13
00:00 UTC
7:00 p.m. ET
Relapse: servers that came back become unresponsive again once they receive traffic.
Fri, Nov 13
01:12 UTC
8:12 p.m. ET
Microsoft identifies the overwhelmed process as the one handling secure connections and starts reverting a recent network configuration change.
Fri, Nov 13
01:48 UTC
8:48 p.m. ET
Microsoft reports positive results from server restarts.
Fri, Nov 13
02:58 UTC
9:58 p.m. ET
Microsoft says its changes are not taking as expected.
Fri, Nov 13
03:36 UTC
10:36 p.m. ET
Microsoft says there is no indication the outage is the result of malicious activity.
Fri, Nov 13
04:12 UTC
11:12 p.m. ET
A second partial recovery is not sustained.
Fri, Nov 13
04:56 UTC
11:56 p.m. ET
Microsoft describes a surge of calls from routing services to backend servers and scales up virtual machines.
Fri, Nov 13
06:24 UTC
1:24 a.m. ET
Microsoft's consumer status names Outlook.com, OneDrive, OneNote, Microsoft To Do, Teams and Microsoft 365 for the web as affected for personal accounts.
Fri, Nov 13
06:54 UTC
1:54 a.m. ET
Microsoft reports "marginal success".
Fri, Nov 13
07:29 UTC
2:29 a.m. ET
Latest update: positive results for server stability after an upstream authentication and routing configuration patch on part of the infrastructure, being extended to more servers. Not resolved, no time given for a fix.
Other Microsoft products in this outage
- Outlook outage
- Exchange Online outage
- Microsoft Teams outage
- SharePoint Online outage
- OneNote outage
- Microsoft To Do outage
- Microsoft 365 Copilot outage
- Microsoft Planner outage
- Microsoft Intune outage
- Microsoft Power Apps outage
- Microsoft Defender for Office 365 outage
- Microsoft Defender XDR outage
- Microsoft Purview outage
- Microsoft Fabric outage
- Power BI outage
- Microsoft Graph outage
- Windows 365 outage
- Universal Print outage
- Microsoft 365 admin center outage
- Microsoft 365 apps outage
- Microsoft 365 Education outage
Live status for every Microsoft product: Is Microsoft down? · Is OneDrive down?
Questions
Is OneDrive down right now?
The "Right now" card on this page reads the live status of OneDrive from Microsoft's own service health page every minute. As of Fri 13 Nov, 07:29 UTC, Microsoft rated the incident "Service degradation" and said: Microsoft lists OneDrive among the services affected for personal accounts.
When will OneDrive be fixed?
Microsoft has not given a time for a full fix. Its latest update said it was seeing positive results for server stability after a patch to an authentication and routing component, and was extending that patch to more servers.
Is the OneDrive outage a cyberattack?
Microsoft says: "As of now, we are not aware of any malicious activity that is causing this incident." It has promised a post-incident report with the root cause.
Is it just me?
No. This is a Microsoft-wide incident (MO1550821) affecting 22 Microsoft products, listed on this page. Changing settings, reinstalling apps or resetting your password will not fix it.
Sources
- Microsoft service health (status.cloud.microsoft)
- Cloud Admin Hub, MO1550821 updates with times
- BleepingComputer
- Techaeris
- Microsoft 365 Status on X
- CNBC
- Reuters, via The Korea Times
- ABC News (Australia) live blog
- ABC7 live updates
- Legal IT Insider
Is It Up or Down is independent and not affiliated with Microsoft. Microsoft, Outlook, Teams and the other product names are trademarks of Microsoft, used here only to identify the products.