| DZ1333265 | Microsoft Defender XDR | Some admins may be unable to access and manage configured GDAP tenants in Microsoft Defender |
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| Status | serviceDegradation |
|---|---|
| Classification | advisory |
| User Impact | Admins may be unable to access and manage configured GDAP tenants in Microsoft Defender. |
| Last Updated | 06/08/2026 04:35:42 |
| Start Time | 05/28/2026 00:00:00 |
| End Time | |
| Latest Message | Title: Some admins may be unable to access and manage configured GDAP tenants in Microsoft Defender
User impact: Admins may be unable to access and manage configured GDAP tenants in Microsoft Defender. More info: Impacted admins may find that previously configured GDAP (Granular Delegated Admin Privilege) tenants are no longer visible or accessible within the tenant switcher in the Microsoft Defender portal. In some cases, admins may also encounter messaging indicating access to “0 out of 1 tenants,” despite having valid GDAP relationships and appropriate administrative permissions. Current status: We’re seeing improvements in internal telemetry after the deployment of the fix completed, and we’re continuing to monitor to ensure that the underlying issue is resolved for all impacted admins. Scope of impact: Some admins attempting to access configured GDAP-connected tenants in Microsoft Defender tenant views may be impacted. This information may be updated as our investigation continues. Start time: Thursday, May 28, 2026, at 12:00 AM UTC Root cause: A recent service update to partner–customer relationship functionality introduced a regression that’s causing some GDAP-connected tenants to incorrectly return an empty tenant list, resulting in impact. Next update by: Tuesday, June 09, 2026, at 5:00 AM UTC |