Live status of all services Advisory · resolved

Users may have been unable to utilize the Side Pane in Microsoft Word and received an error message

Microsoft 365 apps OP1549991

Users may have been unable to utilize the Side Pane in Microsoft Word and received an error message.

Status
Service restored
Feature
Word
Region
Not specified (all regions)
Started
Nov 12, 2026, 05:57 CET
Resolved
Nov 12, 2026, 09:18 CET
Duration
3 h 21 min

More info

Affected users may have seen the following error message:

"something went wrong"

Scope of impact

Some users attempting to utilize the Side Pane in Microsoft Word may have been impacted by this event.

Root cause

A recent change to the underlying service infrastructure affected its ability to process requests successfully.

Next steps:
- We're continuing to investigate the underlying infrastructure issue to determine why the recent change caused impact and identify measures to prevent similar issues from occurring in the future.

This is the final update for the event.

Final status

We've determined that a recent change to the underlying service infrastructure affected its ability to process requests successfully. We've rebalanced resources across the affected infrastructure and after a period of monitoring, confirmed that impact has been remediated.

Timeline

Every update Microsoft posted for this issue, newest first.

  1. Nov 12, 2026, 10:10 CET

    We've determined that a recent change to the underlying service infrastructure affected its ability to process requests successfully. We've rebalanced resources across the affected infrastructure and after a period of monitoring, confirmed that impact has been remediated.

  2. Nov 12, 2026, 08:44 CET

    We've identified that requests are being routed to a portion of infrastructure that isn't processing requests as efficiently as expected, leading to impact. We're applying configuration changes to the affected portion of infrastructure so that it can efficiently handle the requests and process them as expected.

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Source: Microsoft Graph, Service Communications API. This is the view of a Swiss Microsoft 365 tenant: services not licensed there are missing, and individual issues may affect your tenant differently. Microsoft names the region only in the issue text. The Switzerland view shows issues for Switzerland, for Europe in general and those without a region, but not issues that only name other countries such as Germany or the UK. This page is not provided by Microsoft.