How can I remove all traces of a ClickOnce application from a customer's computer?

Question

I have a ClickOnce application that about 120 customers are using. This week, I found out two customers declined an update in January and were stuck on an old version. I dis

Answer 1

This may or may not help. My error messages weren't exactly as you describe, but I was eventually able to remove the final traces on my machine by going to:

HKEY_CLASSES_ROOT\Software\Microsoft\Windows\CurrentVersion\Deployment\SideBySide\2.0

I deleted all grandchild keys that bore names similar to my application. After that I was able to install and run the latest version.

This is on Windows 7 64 bit.