So, I'm trying to redeploy a VSTO application and I get the following beautiful, beautiful, beautiful error...
Unable to install this application because an application with the same identity is already installed. To install this application, either modify the manifest version for this application or uninstall the preexisting application.
It's frustrating, because I know it has been uninstalled and everything is fine. Registry doesn't even show it deployed. Commence "tearing out my hair" mode.
And then, I found the problem. Apparently, VSTO's can sometimes screw up the ClickOnce cache. Awesome! So, that being said, if you run this from the command line (and it's very fast, so don't freak out and think nothing popped up/succeeded) all will be better:
rundll32 dfshim CleanOnlineAppCache
And thus, order and balance was restored to the universe again... for a short time.
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