The company I work for had problems with users who couldn't install our ClickOnce-deployed application. It turned out that they were using a 3G dongle which mod

The company I work for had problems with users who couldn't install our ClickOnce-deployed application. It turned out that they were using a 3G dongle which modified one of the JPEG files in-flight such that it didn't match the hash in the application manifest. We moved to HTTPS anyway so thankfully this stuff is more or less history.