RDP Server stops aloowing connections

Hi have got a 2012R2 DC and a 2008r2 server that is being used as a RDP server.

For the last few weeks every so often the server seems to stop allowing the RDP connection from internal or externally.

Externally you get the "securing connection" as if its going to connect but then it just closes.

Internally you get the prompt for the username and password but it wont take the correct details.

You can still browse via the run (\\servername) and open the services via the working server.

Any ideas on how to get onto the server (without a hard reboot) and to stop it happening would be great.

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Muhammad BurhanManager I.T.Commented:
Check your firewall, seems it may be disturbed
Rakesh KapoorCommented:
You can try disabling your firewall by following the steps given in the article.

RedDoorSuppliesAuthor Commented:
Hi I don't think it will be the firewall as the same thing happens internally.

You get a slightly different issue in the fact that you get a login screen but it wont take the correct username and password.

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Muhammad BurhanManager I.T.Commented:
start with internal connectivity.
at server
1.      Click on Remote Desktop Connection in the Start.
2.      Click on Options.
3.      Click on Advanced tab.
4.      Click on Settings under “Connect it from anywhere”.
5.      Click “Automatically Detect RD gateway Server Settings”.
6.      Click OK.
You may also try the steps below:
1.      Go to Control Panel>System>Advanced System Settings
2. Go to Remote tab.
3. Under Remote Assistance, put a check mark on Allow Remote Assistance connections to this computer
Note: This automatically adds Remote Desktop exception in Windows Firewall.

4. Click on Advanced...
Click this bar to view the full image.
     5. Put a check mark on Allow this computer to be controlled remotely.
     6. Click on OK.
     Note: This automatically adds Remote Assistance exception in Windows Firewall.
Muhammad BurhanManager I.T.Commented:
also please clear the server's logs or save them if needed.
and please check for the Remote Access Connection Manager service is on started and set to automatic.
RedDoorSuppliesAuthor Commented:
That didn't make any difference I'm afraid.

The RDP connection works completely fine both externally and internally then all of a sudden it stops taking the connection.

Its strange as you get to the password screen but when you enter the correct password it disconnects right away!
Muhammad BurhanManager I.T.Commented:
please clears the logs and see what happens in the logs when you enter credentials and it disconnects.
RedDoorSuppliesAuthor Commented:
Ok which logs do you mean?

Do you mean in event viewer?
Muhammad BurhanManager I.T.Commented:
Event Logs
open Event Viewer from the start and clear all of the logs in security and application tree

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RedDoorSuppliesAuthor Commented:
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Windows Server 2008

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