So I'm gonna rephrase everything..
A few days ago now I tried to install the C++ packages for my VS2015 installation, but it wouldn't install them so I uninstalled the entirety of VS2015 and then reinstalled, but since then I've been getting tons of errors when I start the software, they are like this:
I get around 10 of these Package errors before I can finally load into the software, but then when I try to either open an existing C# project it says "Unavailable" or if I try to start a new C++ project it says
I have tried the following to fix these issues, and every possible combination of these:
Uninstalling and reinstalling
Deleting my %appdata% in both Local and Roaming for VS 14.0
Deleting Program Files (x86)\Visual Studio 14.0
Repairing the installation
Uninstalling, cleaning registry, deleting everything I can find RE: Visual Studio and then reinstalling
devenv /setup, devenv /clearcache, devenv /uninstall /force and then reinstalling, every command line I've found anywhere.
I've been dealing with this issue for a few days and it has completely halted my development process and I'm unable to do anything with VS and it's gotten to the point where I'm extremely frustrated and not sure what to do next.
As far as I can tell there are a lot of packages missing from my installation, but Repairing my installation does not fix this. Is there a way to restore the packages?
"Coppied" From THIS POST which has the same error.