Installation Repair

You may need to repair your installation of the .NET Framework after upgrading your operating system or if the system becomes corrupted.

To repair the .NET Framework
  1. Obtain the original installation source. For example, if you installed the .NET Framework from CD or DVD, insert the disk. Or, if you downloaded the .NET Framework, download again and choose to save to disk. If you installed from a network share, reconnect.
  2. On the Start menu, choose Run.
  3. Type the following:
    n:\<Installation Source>\dotnetfx.exe /t:%temp% /c:"msiexec.exe /fvecms %temp%\netfx.msi"

    For example:
    d:\dotNetFramework\dotnetfx.exe /t:%temp% /c:"msiexec.exe /fvecms %temp%\netfx.msi"