Windows Server 2016 - VSS system writer missing

P

Pax_Rupert

Hi All,


I have come across this issue many times, and I would like to put it to rest once and for all. I am running Windows Server 2016. I am taking backups using the Windows System Tools (wbadmin). I get the error "System writer cannot be found", and when I run the command from an elevated prompt:


vssadmin list writers


the system writer is not shown in the list.



I will note that I have over 1000 subdirectories in C:/Microsoft.NET/assembly, which I have seen is a common issue for the system writer.

I have followed the following commands that I read from a previous solutions:

Takeown /f %windir%\winsxs\temp\PendingRenames /a
icacls %windir%\winsxs\temp\PendingRenames /grant "NT AUTHORITY\SYSTEM:(RX)"
icacls %windir%\winsxs\temp\PendingRenames /grant "NT Service\trustedinstaller:(F)"
icacls %windir%\winsxs\temp\PendingRenames /grant BUILTIN\Users:(RX)
Takeown /f %windir%\winsxs\filemaps\* /a
icacls %windir%\winsxs\filemaps\*.* /grant "NT AUTHORITY\SYSTEM:(RX)"
icacls %windir%\winsxs\filemaps\*.* /grant "NT Service\trustedinstaller:(F)"
icacls %windir%\winsxs\filemaps\*.* /grant BUILTIN\Users:(RX)

net stop cryptsvc
net start cryptsvc




The commands given in the solution work, and my backups will work again, but within a couple weeks the backups start failing again (as the system writer went missing again), and I have to re-do solution.

This has happened 4 times now, and while the solution works every time, it is not a permanent fix, as the system writer will go missing of its own accord. Does anyone know if there is a hotfix available for Windows Server 2016? I do not want to have to throw a bandaid on this problem every couple of weeks till it peels off again, it is not an effective long-term solution.


Any help is much appreciated.

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