The following dialog window keeps popping on my computrer when starting "Click-Once" published application from Internet URL:
[Microsoft .NET Framework Setup]
– Would you like to download and install the Microsoft .NET Framework?The content you are trying to access
requires the Microsoft .NET Framework.
Would you like to download and install
this from Microsoft Download Center
Now?….
"Click-Once" worked OK in the past without trying to install .NET Framework but after (I guess) my MS Windows Vista Ultimate System got installed the following automatic updates:
Update for Windows (KB936448 – .Net
Framework 3.0 RTM x86 ru-RU)Update for Windows (KB936403 – .Net
Framework 2.0 RTM x86 ru-RU)
"Click-Once" stopped to work trying to install .NET Framework every time, and even if I run this install it keeps trying to install .NET Framework on subsequent "Click-Once" activations…
I have removed the above updates from my system, and I have installed .NET Framework 3.5 SP1 – but I'm still getting the same issue.
I'd expect it should be possible to manually patch some System Registry Entries to fix this issue but I do not know which ones.
Please advise how this issue can be solved.
P.S. FYI: Windows Vista SP1 is not installed on my system
Best Answer
I had this problem too for a while.
It was caused when I opened a .application file in notepade and set notepad to be the default handler for .application files. (It needs to be the ClickOnce client runtime component).
Resetting this back to the default handler corrected the problem