- Why can't I find the installation directory? (ClickOnce doesn't use the standard C:/Program Files/ location, it stores program files in C:/Users/<your username>/AppData/Local/Apps/2.0 for security reasons.)
- Why does the installer need a network connection? (ClickOnce downloads the required setup files from the internet.)
The lack of a standard Program Files/.exe deployment also makes it difficult to map filetype associations, which is also a frequent complaint.
I'll likely be going with non-ClickOnce deployments for the future. ClickOnce is great for deploying production software at work, but for a consumer audience, it isn't quite perfect.
(Personally, I really like ClickOnce.)