Live status of all services Incident · resolved

Users may be unable to view or modify custom forms in SharePoint Online

SharePoint Online SP1503038

Users may have been unable to view or modify custom forms in SharePoint Online.

Status
Post-incident report published
Feature
Performance (related to custom solutions)
Region
Not specified (all regions)
Started
Oct 12, 2026, 03:00 CEST
Resolved
Oct 14, 2026, 18:00 CEST
Duration
2 days 15 h

Message

A post-incident report has been published.

Timeline

Every update Microsoft posted for this issue, newest first.

  1. Oct 17, 2026, 01:40 CEST

    A post-incident report has been published.

  2. Oct 14, 2026, 19:52 CEST

    We've completed deployment of the fix to all affected environments, and we've confirmed with impacted organizations that the issue is no longer occurring.

  3. Oct 13, 2026, 18:27 CEST

    We're continuing to deploy our fix to the affected environments and anticipate that deployment will be completed within 48 hours. We'll provide the latest deployment progress and updated completion timeline in our next update.

  4. Oct 13, 2026, 17:26 CEST

    We've confirmed a recent API change as the source of the impact and have prevented it from reaching any further environments. We're continuing to deploy our fix to the affected environments to remediate the impact.

  5. Oct 13, 2026, 02:22 CEST

    We’ve isolated a recent API change as the suspected source of the impact. We’ve initiated the process of deploying a fix to confirm our findings and potentially remediate the impact.

  6. Oct 12, 2026, 22:58 CEST

    We're continuing our analysis of the HAR captures to determine the cause of impact.

  7. Oct 12, 2026, 21:11 CEST

    We're expanding our investigation to include HTTP Archive format (HAR) browser captures of the issue in progress to assist in isolating the underlying cause of impact and develop a remediation strategy.

  8. Oct 12, 2026, 20:27 CEST

    We're reviewing support case details to better understand the impact scenario and determine our next steps.

  9. Oct 12, 2026, 20:07 CEST

    We're investigating a potential issue with SharePoint Online and checking for impact to your organization. We'll provide an update within 30 minutes.

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