Can't login to cpanel from windows 11 machine

I cannot login to cpanel from my Windows 11 machine. Same url and account credentials work fine on my Windows 10 machine. Get the error "A network error occurred during your login request. Please try again. If this condition persists, contact your network service provider." on Windows 11.

Have tried various url alternatives, ie. server url, domain url. Nothing works - always the same issue.

It's not VPN, it's not the firewall, the IP is not blacklisted. It's not the browser, as same error happens in Edge, Firefox, and Chrome.

It's obviously something Windows 11, but what!? Google search is no help!

Any ideas anyone? TIA.