M365 Service Status (3 degradations at 2026-01-06 17:09)
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Users may be unable to access shared Microsoft To Do lists
Last Update: 2026-01-06 05:04(JST)
Next Update By: 2026-01-07 04:30(JST)
Status: Service Degradation
Affected Service: Microsoft 365 suite
Users may also be unable to open shared To Do list invitation links.
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Users may be unable to search new users in Microsoft Teams by their display name
Start Time: 2025-12-10 09:00(JST)
Last Update: 2026-01-06 04:11(JST)
Next Update By: 2026-01-07 09:00(JST)
Status: Service Degradation
Affected Service: Microsoft Teams
This may impact users in both the desktop and web clients. Users can
still search new users using their email address.
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Users may see higher battery and CPU usage in Microsoft Teams calls when participants screenshare or share video
Start Time: 2025-12-22 03:14(JST)
Last Update: 2026-01-05 03:26(JST)
Next Update By: 2026-01-07 04:30(JST)
Status: Service Degradation
Affected Service: Microsoft Teams
Microsoft Teams users on Windows may see higher battery and CPU usage
when viewing a screenshare or video from other participants, which can lead to
increased battery drain as more participants share video. This issue only
impacts the Microsoft Teams desktop client on Windows.
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Users may see an English user interface for Outlook on the web on mobile when configured for a non-English language
Start Time: 2025-12-23 09:00(JST)
Last Update: 2026-01-06 03:10(JST)
Status: Service Restored
Affected Service: Exchange Online
Impacted users would see an English user interface for Outlook on the
web when accessing the service through mobile devices on both Android and iOS,
even when the user interface configuration was set to alternate languages.
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Users may be unable to upload attachments from Microsoft OneDrive in Outlook on the web and the new Outlook desktop app
Start Time: 2025-11-27 02:27(JST)
Last Update: 2025-12-30 02:39(JST)
Status: Service Restored
Affected Service: Exchange Online
When users attempted to upload files from OneDrive, they may have
received an error that stated: “We couldn’t retrieve the items you requested.”
Additionally, the option to edit files in the browser was missing.
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Some users may have been intermittently unable to “Create a Copy” of files in Microsoft 365 apps for the web
Start Time: 2025-12-10 09:00(JST)
Last Update: 2025-12-30 12:02(JST)
Status: Service Restored
Affected Service: Microsoft 365 for the web
This issue specifically affected the “Create a Copy” function when
users selected an online save location that differed from the default location
in Microsoft Word, Microsoft PowerPoint, and Microsoft Excel for the web.
Users encountered the error, “Copy could not be created… There was a problem
creating a copy of this file. Please try again in some time.”
The impact was intermittent and retry attempts may have been successful.
As a workaround, users could open Microsoft OneDrive, navigate to the Files
list, and use “Copy to” to create a duplicate.
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Some users may be unable to retrieve email addresses using the SharePoint Online Client Side Object Model (CSOM) API
Start Time: 2025-12-03 10:47(JST)
Last Update: 2025-12-27 03:34(JST)
Status: Service Restored
Affected Service: SharePoint Online
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Some users may have been unable to access the My Templates and Viva Insights Outlook add-ins in Exchange Online
Start Time: 2025-10-22 11:12(JST)
Last Update: 2025-12-26 11:30(JST)
Status: Service Restored
Affected Service: Exchange Online
