Every once in a while after a reboot, double-clicking any shortcut (user programs, desktop or quicklaunch) makes the app's installation program to try to launch again.

The solution in our case is to run the exe file itself directly from the Program Files folder.

I have seen a similar behaviour in an external app written also in .NET but in that case after double-clicking a file associated with the app. And the solution was to run the shortcut first!

I checked the net and it happened to someone else with a web app only after changing users as the "available for all users" option was selected. I also selected this but I login with the same user every time.

Greetz