M365 Service Status (2 degradations at 2025-11-26 08:05)
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Some users may be intermittently unable to access their Exchange Online mailboxes using any connection method
Last Update: 2025-11-21 06:32(JST)
Next Update By: 2025-11-21 08:30(JST)
Status: Service Degradation
Affected Service: Exchange Online
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Users may be unable to delete a user from the contact list within Outlook on the web
Last Update: 2025-11-18 08:58(JST)
Next Update By: 2025-11-25 08:00(JST)
Status: Service Degradation
Affected Service: Exchange Online
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Some users may be unable to search or see free/busy status of others in, or connect to classic Outlook desktop client
Last Update: 2025-11-26 07:30(JST)
Status: False Positive
Affected Service: Exchange Online
Impacted scenarios include, but aren’t necessarily limited to, the
following:
– Search
– Seeing free/busy status of others
– Connecting to Exchange Online mailboxes
– Setting Out of Office (OOF) status.
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Users may have experienced intermittent issues with when joining meetings in Microsoft Teams
Start Time: 2025-11-25 04:00(JST)
Last Update: 2025-11-25 06:10(JST)
Status: Service Restored
Affected Service: Microsoft Teams
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Some users may have been unable to join Microsoft Team meetings
Start Time: 2025-11-25 04:00(JST)
Last Update: 2025-11-25 05:11(JST)
Status: Service Restored
Affected Service: Microsoft Teams
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Some users may be unable to load pages with custom apps or webparts in SharePoint Online and get an error
Start Time: 2025-11-11 09:36(JST)
Last Update: 2025-11-25 04:31(JST)
Status: Service Restored
Affected Service: SharePoint Online
The following error may have been encountered by users when
attempting to load an affected page:
An error occurred during the compilation of the requested file, or one of its
dependencies. ‘Microsoft.SharePoint.IdentityModel.SPAuthFlightController’ does
not contain a definition for ‘IsRemoveRedirectWithProofTokenOnSignInPageEnabled’
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Some users may be unable to open SharePoint Online libraries or recycle bin from navigation library links
Start Time: 2025-11-20 04:30(JST)
Last Update: 2025-11-25 02:01(JST)
Status: Service Restored
Affected Service: SharePoint Online
When opening the library or recycle bin from navigation library
links, a redirect occurred to an xml page instead of the library content, but a
page refresh displayed the content as expected.
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Some organizers may have seen that mandatory labeling wasn’t applying when creating new meetings
Start Time: 2025-01-16 03:30(JST)
Last Update: 2025-11-24 11:35(JST)
Status: Service Restored
Affected Service: Microsoft 365 suite
Impact was specific to meetings created using the Microsoft Teams
calendar and Outlook on the web using the Quick Compose pop-up. Additionally,
impact was specific to admins who had a policy applied where sensitivity labels
are mandatory, and there’s no default label configured.
Attendees saw that there was no sensitivity label applied, but they could still
access and attend the meeting without complications. Users with access to the
Outlook desktop client could use that method to avoid this issue.
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Users may see Frontier Copilot Agents for Word, Excel, and PowerPoint in Microsoft Teams and Exchange Online
Start Time: 2025-11-18 09:00(JST)
Last Update: 2025-11-22 07:41(JST)
Status: Service Restored
Affected Service: Microsoft Copilot (Microsoft 365)
Users may have seen Word, Excel, and PowerPoint agents within
Microsoft Teams and any client of Exchange Online in specific situations, even
when the Frontier setting was disabled.
If users attempt to access the Frontier agents, they will receive an error
message.
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Users may be unable to publish Apps in the Microsoft Teams App Store and the Microsoft Copilot Agent Store
Start Time: 2025-11-19 03:22(JST)
Last Update: 2025-11-22 03:50(JST)
Status: Service Restored
Affected Service: Microsoft 365 suite
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Users may have seen their suggested replies in Microsoft Teams in English despite existing language settings
Start Time: 2025-11-06 08:30(JST)
Last Update: 2025-11-21 09:29(JST)
Status: Service Restored
Affected Service: Microsoft Teams
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Some users may be unable to send or receive email messages through the iOS Mail app using Exchange ActiveSync (EAS)
Start Time: 2025-11-06 10:41(JST)
Last Update: 2025-11-21 04:54(JST)
Status: Service Restored
Affected Service: Exchange Online
The impacted users could have authenticated without issue, but they
received the error “Cannot Get Mail. The connection to the server failed.” when
trying to refresh email messages in the Mail app.
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Users may not receive email messages in Exchange Online from a specific sender
Last Update: 2025-11-21 04:27(JST)
Status: False Positive
Affected Service: Exchange Online
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Users may not receive email messages in Exchange Online from a specific sender
Last Update: 2025-11-20 01:10(JST)
Status: False Positive
Affected Service: Exchange Online
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Multiple issues within Microsoft 365 related to data classification and sensitivity service
Start Time: 2025-11-19 11:00(JST)
Last Update: 2025-11-20 11:38(JST)
Status: Service Restored
Affected Service: Microsoft 365 suite
Impacted services included, but were not limited to:
– Exchange Data Loss Prevention (DLP) and Autolabeling
– Endpoint DLP
– OneDrive for Business and SharePoint Online DLP and Autolabeling
– Copilot grounding
– Microsoft Defender for Cloud Apps
– Inline DLP
– Microsoft Purview, including the Microsoft Purview browser extension
– Purview DLP Agent
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Users may be unable to perform any action on files within Microsoft Copilot (Microsoft 365)
Start Time: 2025-11-19 11:00(JST)
Last Update: 2025-11-20 11:25(JST)
Status: Service Restored
Affected Service: Microsoft Copilot (Microsoft 365)
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Some users may be unable to join teams in Microsoft Teams when using a join code
Start Time: 2025-11-13 07:00(JST)
Last Update: 2025-11-20 06:38(JST)
Status: Service Restored
Affected Service: Microsoft Teams
Users saw a specific error that translated to “Couldn’t join this
team with that code. Double-check the code or try another one”.
As workaround, users could’ve sent a link to join the team to bypass using the
join code.
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Users may have been unable to install Microsoft 365 desktop apps on Windows devices
Start Time: 2025-11-12 03:00(JST)
Last Update: 2025-11-19 07:26(JST)
Status: Service Restored
Affected Service: Microsoft 365 apps
This only impacted users who attempted to install version 2508 (Build
19127.20358) and version 2507 (Build 19029.20294) of the Microsoft 365 desktop
apps.
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Some users may be unable to interact with bots or agents within Microsoft Teams
Start Time: 2025-11-18 11:00(JST)
Last Update: 2025-11-19 01:10(JST)
Status: Service Restored
Affected Service: Microsoft Teams
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Power Pages – Lookup fields for Power Pages management display a ‘No Name’ message
Last Update: 2025-11-18 09:29(JST)
Status: Service Restored
Affected Service: Power Platform
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Users may not see results or experience delays using Microsoft Copilot (Microsoft 365) or Copilot Chat
Start Time: 2025-11-14 03:30(JST)
Last Update: 2025-11-16 01:11(JST)
Status: Service Restored
Affected Service: Microsoft Copilot (Microsoft 365)
Impact occurred for any app that featured Copilot search or Copilot
chat. Users may have also received poor quality of data when they received
search results.
