ClickOnce application does not update or launch

Question

I have a Windows Forms application that I have deployed using ClickOnce, but the users navigate to a network drive and double click on setup.msi instead of using a webpage to install it.

I have two users that have it installed and it's worked in the past. I did an uppate last week and now when the users try to launch the application the window that says "Verifying Application Requirements" pops up, and then when it disappears nothing happens. The dialog that is asking if it's OK to update never pops up.

The network people have verified that they have permissions on the network drive (though, I would expect an error message if this were the issue).

What could cause this to happen?

Answer 1

Have the users recently installed drivers for Kensington hardware (e.g. mice or tracballs)? There is a driver bug that causes ClickOnce applications to behave in a manner that's very close to what you're describing. Here's one discussion of the issue.