Another in the long list of annoying Adobe issues is the “Error 1327.Invalid Drive: [drive letter] while installing or updating Adobe Acrobat” error. It comes up when installing Adobe Acrobat 9 or Adobe Acrobat Reader 9 or X on Windows 7 Enterprise on machines with mapped network drives. It may also come up with other versions of Windows 7. I don’t know if it’s an issue on machines with multiple physical or logical drives (E, F, G, etc.).
It has not been a major issue for me because I have found that installing with the local admin profile which doesn’t map drives works. I don’t know what happens if it tries to auto-update on the profiles with mapped drives. Users aren’t permitted to update software, so it shouldn’t be an issue there. I also suspect that this won’t be an issue if you dump software using a tool.