RDP connections fail for host A --> B but not B --> A

IT_User

5/18/23, 10:56 PM

I have various windows servers all joined to a domain controller. I have the following setup and RDP enabled:

Server A = Windows 2016
Server B = Windows 10

Server-A can RDP to Server B. Server-B cannot RDP to server A.

When I attempt a connection from server B to server A, I receive an error stating:

An authentication error has occurred. 
The function requested is not supported.

Remote Computer: 192.168.192.192
This could be due to CredSSP encryption oracle remediation. For more info...

I went ahead and ran through instructions located :https://docs.microsoft.com/en-us/troubleshoot/azure/virtual-machines/credssp-encryption-oracle-remediation

but I am not seeing those registry values on my system (or it states Not Configured).

Server A = No option of Encryption Oracle Remediation found. 
Server B = Encryption Oracle Remediation - Not Configured

I cleared all logs from server A and attempted to log into Server-A from Server-B using a random username. This generated the failure shown above. I then logged into Server-A and checked event viewer but did not see any events containing the random user I had created.

Any thoughts on where to look next or what the issue might be? Thanks!

0 + 0

windows

remote-desktop

windows-server-2012-r2

windows-10

Elon Musk

I sit in a Tesla and translated this thread with Ai:

EN: RDP connections fail for host A --> B but not B --> A

TH: การเชื่อมต่อ RDP ล้มเหลวสำหรับโฮสต์ A --> B แต่ไม่ใช่ B --> A

RO: Conexiunile RDP eșuează pentru gazda A --> B, dar nu pentru B --> A

RU: Соединения RDP завершаются ошибкой для хоста A --> B, но не для B --> A

VI: Kết nối RDP không thành công đối với Máy chủ A -> B nhưng không phải B -> A

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