How to fix Internal Error has Occurred remote desktop

The "Internal Error has Occurred" message in Remote Desktop (RDP) typically indicates an issue with the configuration of the client or server, network settings, or system resources. Here are several methods to troubleshoot and fix the problem:

1. Disable UDP in Remote Desktop

Remote Desktop sometimes uses both UDP and TCP. Disabling UDP can resolve some issues.

• Open Group Policy Editor (press Win + R, type gpedit.msc).
• Navigate to:
  Computer Configuration > Administrative Templates > Windows Components > Remote Desktop Services > Remote Desktop Connection Client
• Find and double-click on Turn Off UDP On Client.
• Set it to Enabled and apply the changes.

You can also do this via the Registry:

• Open Registry Editor (press Win + R, type regedit).
• Navigate to:
  HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services\Client
• Right-click and select New > DWORD (32-bit) Value.
• Name it fClientDisableUDP.
• Set the value to 1.

2. Modify Security Layer in Group Policy

Changing the security layer might resolve the issue.

• Open Group Policy Editor (press Win + R, type gpedit.msc).
• Navigate to:
  Computer Configuration > Administrative Templates > Windows Components > Remote Desktop Services > Remote Desktop Session Host > Security
• Double-click on Require use of specific security layer for remote (RDP) connections.
• Set it to Enabled and choose RDP as the security layer.

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