19 Jun 2018 
Support Center » Knowledgebase » Errors installing .net 1.1 framework on windows vista
 Errors installing .net 1.1 framework on windows vista

Windows Vista does not come with dotNet 1.1 framework pre-installed. Contrary to what those Windows gurus say that dotNet 1.1 is redundant since Vista come with 2.0 Net framework, there are still a lot of popular applications  insisting that Net 1.1 is installed during setup, otherwise the application will simply fail to work properly or simply refuse to install at all.

Unfortunately, installing .Net 1.1 on some Windows Vista system is not a bed of roses. On some system, .Net 1.1 will simply throw the following error halfway through its installation.

RegSvcs.exe - Common Language Runtime Debugging Services

Application has generated an exception that could not be handled.
Process id=0×5aa (1450), Thread id=0xd86 (3462).
Click OK to terminate the application.
Click CANCEL to debug the application.

This is an issue in the Microsoft .NET Framework 1.1 installation which is known to occur on Windows Vista.


This issue is resolved in Microsoft .NET Framework 1.1 SP1, however you will need to use the following procedure to install both the .NET Framework and the Service Pack at the same time:
Download Microsoft .NET Framework 1.1 Redistributable Package and Microsoft .NET Framework 1.1 Service Pack 1 using links below:

  1. Save both installations in the same directory
  2. Ensure that the Microsoft .NET Framework 1.1 Redistributable Package is named dotnetfx.exe. If not, change its name to dotnetfx.exe.
  3. Ensure that Microsoft .NET Framework 1.1 Service Pack 1 is named dotnetfxsp1.exe. If not, change its name to dotnetfxsp1.exe.
  4. Open command prompt as Administrator, and change to the directory where the two installations are saved.
  5. Run the following commands using the order shown below
    • dotnetfx.exe /c:”msiexec.exe /a netfx.msi TARGETDIR=C:\dotnet”
    • dotnetfxsp1.exe /Xp:C:\dotnet\netfxsp.msp
    • msiexec.exe /a c:\dotnet\netfx.msi /p c:\dotnet\netfxsp.msp
  6. Install both Microsoft .Net Framework 1.1 and Service Pack 1 by running C:\dotnet\netfx.msi

Article Details
Article ID: 26
Created On: 21 Jan 2008 11:07 PM

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