Upgraded to 4.28 and can no longer Login

Hi!

I upgraded to today's new release 4.28 x64 on Windows and it says "404 Unauthorized. The server could not verify that you are authorized to access the URL requested. You either supplied the wrong credentials (e.g. a bad password), or your browser doesn't understand how to supply the credentials required."
I deleted any stored passwords from my browser, disabled password-storing-feature of my Browser, tried 3 different browsers, rebooted, tried installing pgAdmin on other Computer but problem still persists.

I uninstalled v. 4.28 to reinstall 4.27 but the it crashes/exits right after splash screen.

Kind regards,
N. Dechamps

________________________________

Nicolas Dechamps

IT Service
dechamps(at)intend(dot)de

INTEND Geoinformatik GmbH
Johanna-Waescher-Stra?e 5
D - 34131 Kassel

Tel +49 (0561) 316 799 0
Fax +49 (0561) 316 799 7
Web http://www.intend.de

INTEND Geoinformatik GmbH
Amtsgericht Kassel
HRB 7336
Gesch?ftsf?hrer Michael Zintel
UstID-Nr.: DE206491704
St.-Nr.: 025 236 30022