Hey everyone

I hope I'm posting this in the right area. But I am desparate right now.
It all started when I was setting up my new computer and I was downloading the launcher patch. Windows did a restart and afterwards I cannot get passed signing in since it gives me that error.

I have tried various methods i've looked up online.
I've tried the registry method.
Updating Windows.
The internet explorer method.

And I'm just losing hope at this point. Can someone please help!