Hopefully this is the right subreddit....
Let me preface to say, this is a domain environment, with Windows 2016 server, all client computers running Windows 10 Pro version 2004. I will also preface, NO changes have occurred lately on the network - no software changes, firmware changes, or network appliance changes. The environment running perfectly fine then all of a sudden BAM....All RDP client connections to remote server are slow and disconnecting.....
Users reported having issues with RDP client trying to access remote server. When the session starts, the session is slow, sluggish, typically unresponsive with keyboard or mouse input. Then all of a sudden the session ends and the user is dropped and kicked out of the session. There are no error messages or dialog boxes, just the session ending and disconnecting. At the top of the remote window where it shows the network/server address you are remoted into, to the left is the connection bar status symbol that shows only 1 out of 4 bars white, indicating low connectivity. Clicking on the connection status symbol, it says: "The quality of the connection to the remote computer is poor and UDP enabled."
Reboot of the computers and local server (domain controller) have taken place. A reboot of the network switch, gateway/modem, and firewall appliance all took place - twice. Network cables were swapped out with different cables. Rather than plugging network cables into wall jacks, ran network cable straight from computer RJ-45 jack on computer straight into network switch directly. Ran network speed test - reports solid connection of 120Mbps download, average 30 Mbps upload. Disabled antivirus on local computer(s). Reviewed firewall rules, allowing incoming connections for UDP and HTTP/TCP of Remote Desktop Services. Examined and did ping tests of remote server - tested network connection on server. This just all randomly happened today. No other changes have taken place.
Does anyone have any tips at all what might have gone haywire or what may be tripping everything up? Any advice or tips would be greatly appreciated.
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