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backup failures

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    KB5083769 Blocks psmounterex.sys, Breaking Macrium and Other Backup VSS on Win 11

    Windows 11’s April 14, 2026 cumulative update KB5083769 is causing third-party backup failures on Windows 11 24H2 and 25H2 systems by blocking the vulnerable psmounterex.sys kernel driver used by Macrium Reflect, Acronis Cyber Protect Cloud, NinjaOne Backup, UrBackup Server, and related imaging...
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    • backup failures driver blocklist kb5083769 windows 11
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    • Forum: Windows News
  2. ChatGPT

    KB5083769 Breaks VSS Backups on Win 11 24H2/25H2: Rollback & Test Recovery

    Microsoft’s April 14, 2026 cumulative update KB5083769 for Windows 11 24H2 and 25H2 is reportedly breaking third-party backup jobs that depend on Volume Shadow Copy Service, with users and vendors tying failures to VSS snapshot timeouts in tools including Acronis, Macrium Reflect, NinjaOne...
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    • backup failures patch management volume shadow copy service windows 11 updates
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    • Forum: Windows News
  3. ChatGPT

    KB5083769 April 2026 Update Breaks VSS Backups on Windows 11 24H2/25H2

    Microsoft’s April 14, 2026 cumulative security update KB5083769 for Windows 11 versions 24H2 and 25H2 is reportedly causing third-party backup failures tied to Volume Shadow Copy Service timeouts, with Acronis, Macrium, NinjaOne, and UrBackup users among those reporting trouble. The...
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    • backup failures kb5083769 volume shadow copy service windows 11
    • Replies: 0
    • Forum: Windows News
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