VM Window Freeze after Backup to PBS

dung.pm

New Member
Jun 18, 2025
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Hello,
Have anyone face a strange behavior of VM Window after Backup to PBS: lagging ? I even have to force stop VM.

To avoid error 8194, I have config in Window following to the doc VM Backup Consistency - Proxmox VE : VSS set to 5, dcomcnfg create NETWORK SERVICE and restart. And boom, 20s after an backup success, the Vm lag, freeze, cant do anything with it. This happen with 1st time only, when i reboot vm and backup 2nd time, Vm no longer have this issue (maybe because there already a copy in PBS before)

1765902130292.png
I use raw disk and snapshot mode backup

What is the cause of it ?
 
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Same issues here, Backing up VM Window Server 2016, end everything go hang/stuck, must reboot to normal operate