M365 Service Status (2 degradations at 2025-12-06 08:02)
↑Return_to_index
Some users may be unable to open inbound Secure/Multipurpose Internet Mail Extensions (S/MIME) encrypted email messages
Start Time: 2025-11-30 09:00(JST)
Last Update: 2025-12-06 05:35(JST)
Next Update By: 2025-12-06 07:30(JST)
Status: Service Degradation
Affected Service: Exchange Online
This issue strictly impacts users with the Dynamic Delivery policy
enabled.
We’ve temporarily disabled Dynamic Delivery while we work to resolve this issue.
This action may result in potential delays of up to fifteen minutes for users to
receive email messages with attachments. The length of the delay will depend on
the attachments associated with the email message.
Additionally, some users see a “Safe Attachments Scan in Progress” message upon
opening an encrypted inbound email message.
↑Return_to_index
Users may be unable to access the Microsoft Power BI and Microsoft Fabric services
Start Time: 2025-12-05 02:40(JST)
Last Update: 2025-12-05 09:55(JST)
Next Update By: 2025-12-06 03:30(JST)
Status: Service Degradation
Affected Service: Power BI
↑Return_to_index
Users may be unable to open Excel files attached to email messages in new Outlook and receive an error
Start Time: 2025-11-15 05:00(JST)
Last Update: 2025-12-06 06:14(JST)
Status: Service Restored
Affected Service: Exchange Online
Users received an error stating: “Try opening the file again later.”
This issue impacted attachments that contained non-ASCII characters. As a way to
avoid impact, users with access to Outlook on the web could have used this to
bypass the impact or downloaded the file locally to manually open Excel files.
↑Return_to_index
Users may not be able to download Microsoft 365 desktop apps from the Microsoft 365 homepage
Start Time: 2025-12-03 02:21(JST)
Last Update: 2025-12-05 02:16(JST)
Status: Service Restored
Affected Service: Microsoft 365 apps
↑Return_to_index
Some users may be unable to open PDFs within SharePoint Online
Start Time: 2025-12-02 11:55(JST)
Last Update: 2025-12-03 01:05(JST)
Status: Service Restored
Affected Service: SharePoint Online
↑Return_to_index
Some users who are scheduling meetings may not receive accurate declined email messages in Exchange Online
Start Time: 2025-10-27 09:00(JST)
Last Update: 2025-12-02 03:49(JST)
Status: Service Restored
Affected Service: Exchange Online
Specifically, when users sent a meeting invitation that was declined
by a resource room, the email response may have been missing the Organizer’s
details.
While we were focused on remediation, impacted users may have been able to avoid
impact by utilizing the Auto Room Booking feature, which would show up
automatically if they have an active Copilot license when scheduling meetings
through the new Outlook desktop client, Outlook on the web, or Microsoft Teams.
After adding attendees and selecting a time for the meeting, organizers with
this feature available would see a “Add room with Copilot” button which would
enable Auto Room Booking. Once this was enabled, users would see “Copilot
Managed” and “Copilot will rebook if the room declines or the meeting was
rescheduled”. Additionally, when viewing the “Places finder”, it should also
show this feature as enabled, and when users click “Add a room or location”,
then “Browse all rooms”, users will see “Rebook declined rooms” toggled on.
In order to enable this feature, users must have an active Copilot license and
been scheduling meetings using the Outlook (new), Outlook on the web or
Microsoft Teams.
↑Return_to_index
Some users intermittently may not receive responses for their prompts in Microsoft Copilot (Microsoft 365)
Start Time: 2025-12-02 12:10(JST)
Last Update: 2025-12-02 04:01(JST)
Status: Service Restored
Affected Service: Microsoft Copilot (Microsoft 365)
Users may have received an error stating “Something went wrong” when
a response failed to generate. Requests that were successful may have completed
more slowly than usual.
↑Return_to_index
Some users may be intermittently unable to access their Exchange Online mailboxes using any connection method
Start Time: 2025-11-18 02:11(JST)
Last Update: 2025-12-02 02:53(JST)
Status: Service Restored
Affected Service: Exchange Online
↑Return_to_index
Some users in Brazil may have been unable to join Microsoft Teams meetings
Start Time: 2025-12-01 10:05(JST)
Last Update: 2025-12-02 12:15(JST)
Status: Service Restored
Affected Service: Microsoft Teams
↑Return_to_index
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.
↑Return_to_index
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
↑Return_to_index
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
