QuickTip: WebMatrix Installation failure

May 09, 2011 | 0 Minute Read
This post was originally posted on my old blog.

Installing WebMatrix over the Web Platform Installer kept failing on me…
More precisely the dependency “Microsoft ASP.NET Web Pages” failed to install, leading to all dependent components not getting installed.
Uninstalling “Microsoft ASP.NET Web Pages” from the “Programs and features” Control Panel also failed.
Finally this was the solution that solved the problem for me:

1. Remove the trailing backslash from the following registry keys:
   HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\ASP.NET\4.0.30319.0\Path
   HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\ASP.NET\4.0.30319.0\Path
2. Uninstallthe old version of "Microsoft ASP.NET Web Pages".
3. Add the trailing backslash back to those keys.
4. Start installation of WebMatrix over the Web Platform Installer again

The solution was taken from here.