Microsoft 365 Alert – Service Degradation – Microsoft Purview – Admin updates to the Microsoft Purview compliance portal may not be implemented as expected – RESOLVED

02/03/2026 08:59:00 AM

NHSmail Reference: INC46761265

Microsoft Reference: MP1240709

Issue Status: RESOLVED

Issue Description: Admin updates to the Microsoft Purview compliance portal may not be implemented as expected.

More Info: This may impact changes to the following policies made since Wednesday, February 25, 2026:

– Sensitivity Labels
– Microsoft Purview Data Loss Prevention (DLP) policies
– Holds, including custom holds
– Retention Policies
– Insider Risk Management
– Optical Character Recognition (OCR) policies

Additionally, admins aren’t notified if the policies don’t sync as expected.

Final Update: 06/03/2026 08:30:00 AM – Microsoft has determined that a recent service update had introduced an impacting calendar configuration issue that was preventing admin updates from being implemented via the Microsoft Purview compliance portal. After our deployment of a fix to correct the isolated calendar configuration issue, our internal service telemetry validated that impact had been remediated.

Scope of impact: Admins who attempt to update to policies in the Microsoft Purview compliance portal may not be able to do so. This information may be updated as our investigation continues.

Root cause: A caching issue is preventing licensing updates from being applied as expected and resulting in the impact.

Next steps: Microsoft are further analyzing the offending service update and impacting calendar configuration issues to help us improve our pre-deployment testing and validation processes