Server Fault is a question and answer site for system and network administrators. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I've installed python and some other packages using web platform installer, but I was having some issues getting a Django project to work so I uninstalled everything and am trying to get it going from scratch. Web Platform Installer still shows that I have 'Windows Azure SDK for Python" and "Python 2.7 (32-bit)" installed however and I can't mark them as uninstalled.

I don't see where to uninstall from WPI at all, I uninstalled them using control panel. I think I had originally installed python from the python site and had version 3.3 and 2.7 (64-bit), but now there are no entries containing 'python' when I try to uninstall a program from the control panel.

Does anyone know what is going on or can I download the setups from somewhere and try them manually? Is there a way to reset what shows as installed in WPI? I tried uninstalling and reinstalling WPI but that didn't help.

enter image description here

share|improve this question

Ok with a lot of fooling around I found this directory:

%LOCALAPPDATA%\Microsoft\Web Platform Installer\installers\PythonDetectInstalls

In a mangled sub-folder there is a powershell script DetectPythonInistalls.ps1 that has these two lines for checking if python is installed already:

$regKey = "hklm:SOFTWARE\Python\PythonCore\$pythonVersion\InstallPath";
$correctRegKey = "hklm:SOFTWARE\Wow6432Node\Python\PythonCore\$pythonVersion\InstallPath";

Uninstalling all my pythons did not remove these keys. After removing these registry keys with regedit, WPI allowed me to install its own version of python 2.7 and all the other goodies to go with the Windows Azure Python SDK and it worked.

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.