if the op had mentioned they had made a critical change to the cc app by changing the default install language, after installing apps, they would have received a different answer.
and my suggestion was not close to buying a new computer etc: reformatting your hard drive, reinstalling your os and then installing adobe cc is a lot more effort/time and closer to the end of the world. and some users have to do that if they have a hopelessly corrupted installation/computer.
the steps described in my previous message take less than 1 hour. a lot less than 1 hour if you only have a few adobe programs installed.