February 2019
Found a Fix, sign out of you main account, sign in with another account. When that loads sign out again and sign in with the main account. That fixed it for me.
May 2019
lol it doesnt work
January 2020
I had the same white screen on the launcher problem.
I did not have the 2012 version of the redistributable C++, but there were several other versions. performed Repair on each where the option was available.
then continued as above, re-downloading and installing took a bit longer than 0.2 sec, but I didn't save the install download the first time.
that fixed the problem for me.
February 2020
Hey all, I'm locking this thread as it is quite old.
If having an issue then please create a new thread with as much info as possible.
Darko