Microsoft WUSA network-share Windows update failure
Service Disruption
Summary
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Microsoft has fixed a WUSA problem that caused Windows updates to fail when installed from a network share, disrupting update deployment on Windows 11 24H2/25H2 and Windows Server 2025 enterprise systems. The failure could surface as ERROR_BAD_PATHNAME when a share held multiple .msu files. Microsoft first reduced the impact with Known Issue Rollback on some devices before resolving the issue in June 2026 cumulative updates.
Related Happenings
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Service Disruption
H score1
First: 10.06.2026 14:33
Last: 10.06.2026 14:33
Sources 1
About this happening:
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H score14
First: 01.06.2026 13:59
Last: 01.06.2026 13:59
Sources 1
About this happening:
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Service Disruption
H score13
First: 19.05.2026 14:22
Last: 19.05.2026 14:22
Sources 1
About this happening:
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Security Tool/Service
H score10
First: 13.05.2026 17:36
Last: 13.05.2026 17:36
Sources 1
About this happening:
**Microsoft** fixed a **Windows Autopatch** service bug that let **restricted driver updates** reach some managed devices in the **EU**, bypassing admin approval controls and crea...
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Vulnerability
H score25
First: 13.05.2026 13:36
Last: 13.05.2026 13:36
Sources 1
About this happening:
Microsoft patched **CVE-2026-41096**, a **heap-based buffer overflow** in **Windows DNS** that could let an unauthorized attacker execute code remotely on vulnerable Windows syste...
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Timeline
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12.06.2026 14:44 2 articles · 6h ago
Microsoft WUSA network-share Windows update failure
Initial DisclosureMicrosoft acknowledged the **WUSA** update-installation failure in **August 2025** after reports that updates could not be installed from a **network share** with multiple **.msu files**. A mitigation later rolled out for some non-managed devices through **Known Issue Rollback** in **September 2025**.
Show sources
- Microsoft fixes Windows update failures linked to WUSA installer — www.bleepingcomputer.com — 12.06.2026 14:44
- Microsoft fixes Windows update failures linked to WUSA installer — www.bleepingcomputer.com — 12.06.2026 14:44