Change where Arc looks for Python

Discussion created by stacyrendall on Jun 12, 2013
Latest reply on Jul 1, 2013 by stacyrendall
I recently installed the very useful 64bit geoprocessing patch (more info here). However, the admin guy installed the new Python to C:\Python27, while the old Python was installed (by default) to D:\Python27.

To keep things tidy we would like to move the old 32bit Python to C:\Python27 as well (note that I am not intending to put both versions in the same folder, but just to have C:\Python27\ArcGIS10.1 as the location of 32bit and C:\Python27\ArcGISx6410.1 as the location of 64bit). However, I cannot find out how to do this without killing Arc. Renaming the folder of the 32bit Python, hoping that it might no longer even be necessary) causes ArcCatalog to crash on startup (no error message, just sits on splash for a while then disappears).

I thought this would be defined through a link in the Arc install folder, or in the registry, however, neither of these seem to be the case. Am I missing something?