What is "Remote Desktop Services" in my Windows 7 service list? And how is "Remote Desktop Services" service related to TermSrv.dll?

"Remote Desktop Services" is a Windows 7 service that "Allows users to connect interactively to a remote computer. Remote Desktop and Remote Desktop Session Host Server depend on this service. To prevent remote use of this computer, clear the checkboxes on the Remote tab of the System properties control panel item."

Detailed information on "Remote Desktop Services" service:

Service name: TermService
Display name: Remote Desktop Services
Execution command: C:\Windows\System32\svchost.exe -k NetworkService
Start type: Manual
Service status: Started
Dependencies:
   DCOM Server Process Launcher
   RPC Endpoint Mapper

"Remote Desktop Services" service is provided by a DLL file called: TermSrv.dll:

Name: TermSrv.dll
Location: C:\Windows\System32\TermSrv.dll
Description: Remote Desktop Session Host Server
File version: 10.0.17134.1
Size: 1,030,656 byte
Modified: Wednesday, ‎April ‎11, ‎2018, ‏‎11:34:39 PM

Disabling "Remote Desktop Services" service should not cause any issues when running Windows 10 system.

However, if this is a remote computer, you must keep "Remote Desktop Services" running. Otherwise, you will not be able to login to that computer remotely!

You should also run two other services "Remote Desktop Services UserMode Port Redirector (UmRdpService)" and "Remote Desktop Configuration (SessionEnv)" on the remote computer to accept remote desktop logins.

You can use the following Powershell commands on the remote computer to make sure it's ready to accept connections:

C:\fyicenter> netstat -ano | select-string 3389
  TCP 0.0.0.0:3389   LISTENING   8028
  TCP [::]:3389      LISTENING   8028

C:\fyicenter> tasklist /svc | select-string 8028
  srchost.exe        8028       TermService

On the local computer, you run the "psping" tool (download it from https://live.sysinternals.com/psping.exe) to see if you can reach the remote computer on port 3389.

C:\fyicenter> psping -accepteula 192.1168.1.3:3389

...
Connecting to 192.168.1.10:3389: from 192.168.1.100:64654: 0.40ms
Connecting to 192.168.1.10:3389: from 192.168.1.100:64654: 0.30ms
Connecting to 192.168.1.10:3389: from 192.168.1.100:64654: 0.50ms
...

⇒ Remote Login Permission on Windows 10

⇐ Troubleshoot RDP (Remote Desktop Protocol) Server

⇑ Networking with Windows 10

⇑⇑ Windows 10 Tutorials