Installing to mapped drive is not supported

While trying to install Visual Studio 2005 one of my client was getting error "Installing to mapped drive is not supported"

Complete Error

At least one component has an install path set to a mapped drive. Installing to mapped drive is not supported

Cause: This issue is seen when the C:\Program Files\Common Files location in the registry is set to a Mapped or a Share Drive

Resolution: Registry Edit is require for this

WARNING: Using Registry Editor incorrectly can cause serious problems that may require you to reinstall Windows. Microsoft cannot guarantee that problems resulting from the incorrect use of Registry Editor can be solved. Use Registry Editor at your own risk.

The registry key to modify is:


CommonFilesDir: This key should point to C:\Program Files\Common Files

Comments (5)

  1. Matthew says:

    This did not fix the problem for me. The key was already set up correctly.

  2. Joy says:

    Hi Matt,

    Can you provide me the exact error and if you are using any mapped drived?



  3. jens says:

    I get the same error when trying to install some addons. I can see that the Test parts are said to be installed on a mapped drive. (i have never choosen this so it is strange anyhow). The reg. key is refering to the correct place ( c:program filesCOmmon files)

    Is it possible to edit the file that is describing where components are installed and fix the faulty path?

  4. em3 says:

    I have the same error while attempting to UNINSTALL Visual Studio 2005 component (namely, C# part).

    I’ve checked the registry and all paths seem to be correct in


    What’s more, all the locations in installation details seem to point to places on drive C:.

    Crazy, eh?

  5. Matt says:

    Joy not able to reach you. Please provide your new email address in case changed.


Skip to main content