Hi @kwc,

Looks like an issue with ClickOnce cache. Please ask the users who get this issue to do the following:

Run following command on a command line window:

rundll32 %windir%\system32\dfshim.dll CleanOnlineAppCache

This command will run for a few minutes in the background. You wouldn’t see it in the command line though.

Alternatively, you can ask the users to delete these directories; if the above command does not work, ask them to delete these directories:

C:\Users\<User_name>\AppData\Local\IsolatedStorage
C:\Users\<User_name>\AppData\Local\Apps\2.0

Once performing  one of the above steps, the user may need to restart the application and in some cases restart the machine as well. It’s better to close the application before performing this. 

If both of these do not work, please ask the user to go to Tools → Options → Debug Console in IEE, which will open the Debug Console. Then in Debug Console go to Options → Download All Packages. This will download all the dlls to the client machine. After that, restart the application and see if the user still gets the issue. 

Hope this helps!

Hi,

If the above reply doesn’t solve the issue there may be also some software that prevents from downloading this dll. I had such problem some time ago at our customer site (don’t remember it was Kaspersky or other AV software thats blocks downloading because of “suspicious” content.

Best regards

Zbigniew