Some admins may receive failures creating or updating Communications Compliance policies in Microsoft Purview

Title: Some admins may receive failures creating or updating Communications Compliance policies in Microsoft Purview

User impact: Admins may receive failures creating or updating Communications Compliance policies in Microsoft Purview.

More info: Impact is limited to Communications Compliance policies with more than four classifiers.

We advise admins to keep classifiers to a maximum of four during this time and we anticipate the limit to be remediated by Monday, October 5, 2026.

Current status: We've received reports from a subset of affected admins who have reported receiving size limitation failures when creating or updating Communications Compliance policies in Microsoft Purview. We've isolated that a recent update introduced operations with larger data size included a code issue, causing size limitation issues. We've created a code fix to address the issue, which we anticipate being fully deployed by Monday, October 5, 2026. During this time, we advise users to keep Communications Compliance policies limited to under four classifiers in order to avoid impact.

Scope of impact: Some admins may receive failures creating or updating Communications Compliance policies in Microsoft Purview with more than four classifiers. This section may be updated as the investigation progresses.

Estimated time to resolve: We anticipate impact to be remediated by Monday, October 5, 2026.

Root cause: A recent update introduced operations with larger data size included a code error, causing size limitation issues.

Next update by: Monday, September 28, 2026, at 6:00 PM UTC

Title: We're looking into a potential problem impacting Microsoft Purview

User impact: We're checking for potential impact to your users.

Current status: We're investigating a potential issue with Microsoft Purview and checking for impact to your organization. We'll provide an update within 30 minutes.