If the Windows Installer engine fails with a generic exit code of 1935 – I usually spent a few hours troubleshooting the machine in pure nerdy interest. Here are a few tips gathered to save myself and hopefully someone else time.

Quite often the issue lies that you are chasing a red-herring. The error code you may get back is either a generic access denied or a file not found. Reviewing all the activity with Process Monitor quite seldom gives any direct hints as there are numerous red herrings that will lead one astray.

After 1h tracking this particular issue – gathering ones thoughts for the future seemed the easiest.

ERROR:Error 1935.An error occurred during the installation of assembly 'Microsoft.VC80.ATL,type="win32",version="8.0.50727.42",publicKeyToken="1fc8b3b9a1e18e3b",processorArchitecture="amd64"'


In order of preference – try the following

Ensure that the folder C:\WINDOWS\WINSXS\TEMP and C:\WINDOWS\WINSXS\INSTALLTEMP exist and that the administrative group aswell as the system account has full access to it.


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