How to fix RDP internal error?

[louisg94]

Please notice that there are no specific explanations available about what could cause this problem. Based on experience and the potential reasons outlined in the previous section, you can use a few settings and fixes to correct the internal error and get your device back in order.

Adjust Remote Desktop Connection Configuration
You should check the options and make the appropriate adjustments to ensure that you have isolated the risk of any incorrect or misplaced RDP Connection settings. There are a few users who have confirmed that the problem has been fixed by applying the changes outlined here.
Go to the START menu and look for a Remote Desktop Connection. You can also type it in the search function on your Windows system and pick it from the search results.
To view all the options available, click Show Options. Go to Experience and find the Reconnect if the connection is dropped option. Make sure that this option is checked.
You can now try to reconnect by tapping the Connect button. A good number of users have indicated that the problem was resolved after the reconnection option had been reconfigured.

Changing the MTU Value
MTU or Maximum transmission Value is another issue that can cause a communication error. The MTU value refers to the maximum value of the packet you can transmit over a network. Most of the time, reducing the value of MTU will solve the problem for you.
You will need to download a tool called TCP Optimizer to adjust the MTU value. Launch the TCP Optimizer as an administrator. You can select the personalized settings here and set the MTU value as 1458.
You can use any of your favorite TCP Optimization methods. This will help you deal with the issue with a stronger result.

Other Solutions
There are other temporary solutions that may help with this issue. Please note that these solutions can only solve the problem to some degree and might not be effective enough for other issues.

Restart Remote Desktop Service
In certain instances, restarting the Remote Desktop Service does the trick, so you should restart it manually.

Disable the VPN Connection
It is likely that your device is configured to use a proxy or a VPN connection, so as a result, your internet connection will be routed via another server, and this may prevent it from establishing a connection properly.  Disable proxy settings for the internet. Also, make sure you disable any VPNs running on your computer.

Change the Service Startup
It is likely that the Remote Desktop service has been configured in such a way that it is not allowed to start automatically. Adjust the configuration to allow the service to start automatically.

Activate Persistent Bitmap Caching
Another partial reason for this problem is that the “Persistent Bitmap Caching” feature is disabled from the RDP settings. Open the Remote Desktop Connections software and change this setting from the Experience panel.