Error: The remote server returned an error: (404) Not Found.


We're seeing a large number of Hyper-V VMs have backup failures with the following error:

Error: The remote server returned an error: (404) Not Found.

The Windows event logs aren't giving me any information about this error. It looks like this issue was fixed in a previous version of vRanger (7.6.5). Has anyone seen this error before and been able to pinpoint the cause?

Any help would be appreciated, thanks!

  • Hello Alex, 

    This usually is related to the agent timeout when creating the snapshot on the Hyper-V host. We marked it as a defect in the past because the 5 minutes timeout was hard-coded. If you have the Hyper-V agent updated to the vRanger version you are using (usually some customers upgrade vRanger and not the agent), You can modify the timeout to see if it helps:

    On HyperV Host

    Step 1: Login Hyper-V host System and go to "C:\Program Files\Quest\HostService"
    Step 2: Open config file "Quest.Hyper_V.HostService.exe.config"
    Step 3: Increase the timeout value by changing
    <add key="OrphanedSnapshotsTimeOut" value="5"/>
    <add key="OrphanedSnapshotsTimeOut" value="120"/>
    Step 4: Restart Service "Quest Hyper-V Backup Agent"
    Step 5: Start Backup job.

    If this doesn't help, please create an SR so we can investigate this issue. 


  • Hi Alexis, that worked! We are no longer seeing the error. Thank you!