Why don't Microsoft sites rollback from a Hyper-V virtual machine when NAT is configured?

Question

Hetzner

Tell me please!
Deployed a server in Hetzner on Windows Server 2012 R2
Raised Hyper-V with Internal and External switch
Raised NAT + VPN
Deployed Generation 2 virtual machine, Windows Server 2012 R2, connected to Internal Switch
The Internet is working on the virtual machine, any sites are opened (receives via NAT ). But when I try to log in to Microsoft services (microsoftonline.com, visualstudio.com) at the time of authentication after entering the password through Google Chrome, I get an error err_connection_reset 504
From the host, everything opens successfully