I get this error when I open the sklauncher and it asks me if I want to update. I say yes and the error pops up. help? (When I press no, I don't want to update, I can play minecraft and minecraft also works when I play it via the regular minecraft.exe)
This might be wrong but, you computer/launcher your using might be thinking the place your launcher is downloading the updated files from is not a trusted source. If your using the .exe you might want to try the .jar launcher to see if they both come up the same or if the .jar works.