Can't log in to Adobe CC or apps

I'm trying to use Fresco but I can't get past the login screen.

When I try to install CC (or the Fresco installer), I get the sign-in loop with my browser. If I stop the loop and try to login manually, it gives me error 206.
I then tried installing Fresco through the Microsoft Store, and when it asks me to sign in from there, I do it and immediately receive a "You've been disconnected from Creative Cloud" message.

I know that the sign in attempts are successful because they appear as active sessions at my account's security options. It's like it signs in successfully, but immediately loses access.

I tried installing it on a different computer and it worked just fine, so nothing wrong with my connection.

Things I've already tried:
Reset firewall config;
Login with firewall and antivirus turned off;

Reset Windows Hosts file;

Used the CC cleanup tool multiple times, executed as admin;

Deleted anything Adobe-related at Windows Credentials Manager.

Any ideas?