“Microsoft Installer Information Error 1935 “

Asked By 0 points N/A Posted on -

Hello everybody here at Techyv!

I installed .Net framework on Vista-run desktop and got this error surprisingly enough after a couple of minutes.

Nothing went wrong with first installation and everything ran smoothly.

I left the program running and when I returned I found this on the screen. Any suggestions on what to do?

I have shut down the unit and am using a second one now. Thank you for help on this one.


Microsoft_VC80_MFC_x86_x64 Installer Information

 Error 1935.An error occurred during the installation of

 Assembly component

{8731EA9C-B0D8-8F16-C8B3B9A1E18E}. HRESULT:



Best Answer by Dexter Alberto
Answered By 0 points N/A #96704

“Microsoft Installer Information Error 1935 “


This is well known issue when installing multiple interim release.

If you have one of the following:

Visual Studio
Visual Studio .NET
MSDN Library
other Office products

Please go to:


To do this click on Windows/Start > on the search box just type run > the run icon must appear > then click it > a new tab will appear then paste the following text above (%windir%WinSxS).

A new windows tab must appear then rename each *vc80* file to a different name.

Then try to re-run setup you are trying to install.

The setup must running now.


Best Regards,

George Marcus

Best Answer
Best Answer
Answered By 0 points N/A #96705

“Microsoft Installer Information Error 1935 “


Hi Williamina,

The problem may have been caused by Fussion.dll file. After installing the Microsoft .NET framework, Windows installer service uses the Fusion.dll file to manage assemblies. The .NET framework, when installed, upgrades the Fusion.dll file to a later DLL version.

However, if not stopped before .NET framework installation, the Windows installer tries to use the original version of Fusion.dll for installation which brings about the error. The error can be solved by:

  • Using Dotnetfx.exe file to install the .NET framework. This stops Windows installer before the framework is installed.
  • Restart the computer before installing .NET framework then use Netfx.msi windows installer package to install the framework.

Thank you.

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