Python 3 installation failed 'Keyset as registered is invalid'

Question

I have been trying to get Python 3 installed, but this error occurs:

I am

Answer 1

I encounterd this problem for all applications, meaning that when I tried to install an application the same error will pop up "keyset as registered is invalid".

The solution for me was to delete the folder

S-1-5-21-3065067753-4167832549-3323262698-1001

found here:

%AppData%\Microsoft\Crypto\RSA

Please make a copy of it before you try it