Adobe Creative Cloud — Error 206 sign-in loop

Creative Cloud won’t let me sign in. It keeps asking to log in again and sometimes shows Error 206 (server disconnection).

Windows 11

Tried:

•	Reinstall + Adobe Cleaner Tool

•	Delete OOBE/CoreSync

•	Reset DNS

•	Change DNS (Google)

•	Firewall/antivirus off

•	Different internet (including hotspot)

•	With and without VPN

•	Checked hosts file (no adobe entries)

Websites work, but Adobe authentication seems unreachable