troubleshooting Question

Server 2019 latest patches and updates, BSOD caused by dedup.sys during large file copy

Avatar of Ryan Snapp
Ryan Snapp asked on
Windows Server 2019
15 Comments1 Solution17 ViewsLast Modified:
I have a Windows Server 2019 ESXi 7 VM that has been getting BSOD's with the Dedup.sys. After reviewing the logs, I decided to do an unoptimize of the volume in question and hopefully resolve the issue. It blues screens when trying that as well.

At this point, I decided to mount a backup of the virtual disk on my Veeam Server (a separate Physical Windows Server 2019 Box) and started a copy from it as well, and sure enough, it blue screens too with Dedup.sys being flagged as the reason again.

I've run mem test and all that on both these servers. They otherwise perform fine and the other VM's on my ESXi servers are fine. Chdsk and all that has been run as well.

Any suggestions? 

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