Microsoft: Recent Windows updates cause desktop loading issues
Microsoft has acknowledged that certain Windows 11 users, particularly those using Azure Virtual Desktop hosts with FSLogix, may encounter desktop loading issues such as black screens after installing August 2026 preview and subsequent updates. The issue manifests as a black screen post sign-in and Windows Explorer crashes. Microsoft has provided temporary workarounds including manually launching Windows Explorer and deploying Known Issue Rollback group policies for enterprise environments. A permanent fix is pending in future updates.
AI Analysis
Technical Summary
Following the installation of August 2026 preview updates (KB5120996 for Windows 11 26H1, KB5120998 for Windows 11 24H2/25H2) and subsequent Patch Tuesday updates (KB5124008 and KB5122880), some users experience desktop loading failures characterized by black screens and Windows Explorer crashes. This primarily affects Azure Virtual Desktop hosts using FSLogix. Microsoft mitigated the issue for enterprise customers via Known Issue Rollback (KIR) group policies (KB5124006 for 26H1 and KB5124010 for 24H2/25H2), which disable the problematic change until a future fix is released. Users can temporarily resolve the issue by manually starting explorer.exe through Task Manager.
Potential Impact
Affected users may be unable to access their desktop environment immediately after sign-in due to black screens and Windows Explorer crashes, disrupting normal workflow. The issue mainly impacts Azure Virtual Desktop hosts using FSLogix, potentially affecting virtual desktop environments in enterprise settings. No active exploits or security breaches have been reported in relation to this issue.
Mitigation Recommendations
Microsoft recommends temporarily launching Windows Explorer manually via Task Manager as a workaround. Enterprise administrators can deploy Known Issue Rollback group policies (KB5124006 for Windows 11 26H1 and KB5124010 for Windows 11 24H2/25H2) to disable the problematic update changes. A device restart is required after applying these policies. Users and administrators should monitor for future Windows updates that will provide a permanent fix.
Microsoft: Recent Windows updates cause desktop loading issues
Description
Microsoft has acknowledged that certain Windows 11 users, particularly those using Azure Virtual Desktop hosts with FSLogix, may encounter desktop loading issues such as black screens after installing August 2026 preview and subsequent updates. The issue manifests as a black screen post sign-in and Windows Explorer crashes. Microsoft has provided temporary workarounds including manually launching Windows Explorer and deploying Known Issue Rollback group policies for enterprise environments. A permanent fix is pending in future updates.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Following the installation of August 2026 preview updates (KB5120996 for Windows 11 26H1, KB5120998 for Windows 11 24H2/25H2) and subsequent Patch Tuesday updates (KB5124008 and KB5122880), some users experience desktop loading failures characterized by black screens and Windows Explorer crashes. This primarily affects Azure Virtual Desktop hosts using FSLogix. Microsoft mitigated the issue for enterprise customers via Known Issue Rollback (KIR) group policies (KB5124006 for 26H1 and KB5124010 for 24H2/25H2), which disable the problematic change until a future fix is released. Users can temporarily resolve the issue by manually starting explorer.exe through Task Manager.
Potential Impact
Affected users may be unable to access their desktop environment immediately after sign-in due to black screens and Windows Explorer crashes, disrupting normal workflow. The issue mainly impacts Azure Virtual Desktop hosts using FSLogix, potentially affecting virtual desktop environments in enterprise settings. No active exploits or security breaches have been reported in relation to this issue.
Defensive Guidance
Microsoft recommends temporarily launching Windows Explorer manually via Task Manager as a workaround. Enterprise administrators can deploy Known Issue Rollback group policies (KB5124006 for Windows 11 26H1 and KB5124010 for Windows 11 24H2/25H2) to disable the problematic update changes. A device restart is required after applying these policies. Users and administrators should monitor for future Windows updates that will provide a permanent fix.
Technical Details
- Classification
- {"confidence":0.3,"severitySource":"default","classifier":"rss-v2"}
- Article Source
- {"url":"https://www.bleepingcomputer.com/news/microsoft/microsoft-recent-windows-updates-cause-desktop-loading-issues/","fetched":true,"fetchedAt":"2026-09-25T10:47:50.814Z","wordCount":625}
Threat ID: 6ab65156f7a7c54106aa7312
Added to database: 09/25/2026, 10:47:50 UTC
Last enriched: 09/25/2026, 10:47:55 UTC
Last updated: 09/26/2026, 04:43:07 UTC
Views: 24
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