The remote desktop error $ 0027 An internal error $ 0027 has occurred often is caused by your local group's RDP settings or security policy. There have been quite a few reports that users are unable to use the Remote Desktop Connection client to connect to another system. According to reports, this issue occurred out of nowhere and was not caused by any particular action.

When I click Connect, Remote Desktop Connection client freezes then error appears after a few seconds. Since many users use Remote Desktop Connection for their business or personal purposes, this mistake can be quite painful. However, do not worry, as you can fix the problem by checking this article.
What causes the error “An internal error has occurred” in Windows 10?
As the error appears out of nowhere, its specific cause is unknown; However, can occur due to one of the following factors:
- Remote desktop connection settings: For some users, the error is due to the Remote Desktop Connection client settings.
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RDP security: in some cases, the error may appear due to Remote Desktop Protocol security, in which case you will need to change the security layer.
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The domain of the computer: Another thing that can cause the error to appear may be the domain your system is connected to. In that case, deleting the domain and then rejoining it will fix the problem.
Now, before applying the solutions provided below, make sure you are using an administrator account. What's more, We recommend following the solutions provided in the same order they were provided so that you can quickly isolate your problem.
Solution 1: change remote desktop connection settings
to get started, we will try to isolate the problem by changing the RDP settings a bit. Some users have reported that their issue was resolved once they checked the box “Reconnect if connection drops”. You can do it by following the steps indicated:
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Go to the Start menu, find Remote Desktop Connection and open it.
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Click Show Options to reveal all settings.
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Switch to the Experience tab and make sure the box $ 0027 Reconnect if connection drops $ 0027 is marked.
Change RDP settings
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Try to connect again.
Solution 2: go back to the domain
The error message is sometimes generated due to the domain the system has connected to. In such cases, deleting the domain and then rejoining it will fix the problem. Here's how to do it:
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Press the Windows key + I to open Settings.
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Go to Accounts and then switch to the Work or School Access tab.
account settings
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Select the domain to which you have connected your system and then click Disconnect.
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Click Yes when asked to confirm.
Confirmation to delete the domain
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Disconnect your system and then restart your computer as directed.
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Once you have rebooted the system, you can rejoin the domain if you want.
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Try using RDP again.
Solution 3: change the MTU value
Another way to fix the problem would be to change the value of your MTU. The maximum transmission unit is the largest size of a packet that can be sent on a network. Lowering the MTU value can help solve the problem. Here's how to do it:
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To change the MTU value, you will need to download a tool called TCP Optimizer. You can download it from here.
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Once downloaded, open TCP Optimizer as administrator.
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On the bottom, select Custom vs. Choose Settings.
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Change the MTU value to 1458.
Change MTU size
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Click Apply Changes and then exit the program.
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Check if that fixes the problem.
Solution 4: change RDP security in Group Policy Editor
In some cases, error message appears due to RDP security layer in Windows group policies. In these cases, you will have to force it to use the RDP security layer. Here's how to do it:
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Go to the Start menu, search for Local Group Policy and open $ 0027 Edit group policy $ 0027.
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Navigate to the following directory:
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Equipment setup> Administrative Templates> Windows Components> Remote desktop services> Remote Desktop Session Host> Safety
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On the right side, locate the $ 0027 Requires the use of a specific security layer for remote connections (RDP) $ 0027 and double click to edit it.
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If it is configured as $ 0027 Not configured $ 0027, select On and then, versus Security Layer, choose RDP.
Edit the RDP security policy
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Click Apply and then OK.
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Reboot your system for the changes to take effect.
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Try to connect again.
Solution 5: disable network level authentication
You can also try to fix your problem by disabling network level authentication or NLA. Sometimes, the problem may be because you or the target system is configured to only allow remote connections running in Remote Desktop with NLA. Disabling it will fix the problem, This is how you do it:
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Go to your Desktop, right click on This PC and select Properties.
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Click Remote Settings.
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In remote desktop, uncheck the box $ 0027 Allow connections only from computers running Remote Desktop with network-level authentication $ 0027.
Disable network level authentication
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Click Apply and then OK.
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See if it isolates the problem.
Solution 6: restart remote desktop service
In some cases, restarting the Remote Desktop Service works, Thus, in this step, we will restart it manually. For that:
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Pulse »Windows» + »R» to open the run prompt.
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Write »services. msc »and press» Enter «.
Execution Services.msc
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Double click on »Remote Desktop Service» and click on «Stop».
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Click on “Start” after waiting at least 5 seconds.
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Check if the problem persists.
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Change RDP settings
account settings
Confirmation to delete the domain
Change MTU size
Edit the RDP security policy
Disable network level authentication
Execution Services.msc




