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All Veeam jobs are started failing suddenly with error Job cannot be started timeout 901 sec

  • July 28, 2026
  • 4 comments
  • 14 views
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All Veeam jobs are started failing (VMware Snapshot/Agent/Offload) suddenly with error Job cannot be started timeout 901 sec. we are on 12.3.2 version. Any suggestions or guidance is highly appreciated.
Its started working fine post restart of services.

    4 comments

    Chris.Childerhose
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    Check the logs here for the jobs to see what might be causing the issue - C:\ProgramData\Veeam\Backup\Job-Name

    If nothing there I would suggest a support case as the error message is generic and could be many things.

    Chris Childerhose (Enterprise Architect) - VMCE+ | VMCA | VMCE | VMCE-SP | Veeam Vanguard 8* | Veeam Legend 5* | VUG Canada Leader | vExpert 7* | Toronto VMUG Leader | VCAP-DCV/VCP-DCV/VCP-VVF | Object First Ace | Cisco Champion | Twitter: @cchilderhose | Blog Site – https://just-virtualization.tech
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      • dkumar
      • Author
      • July 28, 2026

      ​@Chris.Childerhose  nothing specific i could see in logs, i have opened a case. any comment on article 

      KB1909: Job Fails to Start Due to Timeout Caused by Desktop Heap Allocation Failure

        Chris.Childerhose
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        ​@Chris.Childerhose  nothing specific i could see in logs, i have opened a case. any comment on article 

        KB1909: Job Fails to Start Due to Timeout Caused by Desktop Heap Allocation Failure

        To me, the KB would only apply if you are seeing the messages in the Event Viewer.  At this point I would wait for support to assist.

        Chris Childerhose (Enterprise Architect) - VMCE+ | VMCA | VMCE | VMCE-SP | Veeam Vanguard 8* | Veeam Legend 5* | VUG Canada Leader | vExpert 7* | Toronto VMUG Leader | VCAP-DCV/VCP-DCV/VCP-VVF | Object First Ace | Cisco Champion | Twitter: @cchilderhose | Blog Site – https://just-virtualization.tech
        coolsport00
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        • coolsport00
        • Veeam Legend
        • July 28, 2026

        ​@dkumar - agree that Support is your best bet. They’ll be able to decipher your logs best. Have you made any recent changes or updates to your Veeam Server? Other components? Have you made A/V exclusions as noted in this Veeam KB? Other than those things, I don’t really have anything else you could look at. Curious what Support finds.

        Best.

        Shane Williford - Veeam VMCA/VMCE+ | Veeam Legend | VUG Leader | VCP-DCV | Twitter: @coolsport00
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