I've seen a few other posts on this problem, but none of them seem to direct me on how to actually solve it. Recently many machines in my environment have lost most Application Content Types. Usually defaulting to only IRC, IRCS, and MAILTO; nothing else. A few applications have popped into the FF install on my PC, but I can't figure out how to force an app in there. I've seen a post that details how to add something manually, but I am not exactly keen on manually adding everything to a few dozen machines. I've been pushing my end users to use Chrome for the time being, something I'd rather not do. Any help would be appreciated.