5 Common RDP Errors and How to Fix Them

Remote Desktop Protocol (RDP) is a handy tool for accessing computers remotely. However, it isn’t always smooth sailing. Many users encounter errors that disrupt their work. These issues can arise from network problems, incorrect settings, or outdated software. In this article, we will discuss five common RDP errors and how to fix them in simple steps.

1. Unable to Connect to the Remote Computer

This is the most frequent issue users face. It usually happens because of network or configuration issues.

Possible Causes:

• The host computer is not online.
• RDP is not enabled on the host computer.
• Firewall or antivirus software is blocking the connection.

Fixes:

1. Check Network Status: Ensure both devices (client and host) are connected to the internet.
2. Enable RDP on the Host:
   • Go to the host computer’s settings.
   • Search for Remote Desktop and enable it.
3. Check Firewall Settings:
   • Open Windows Security.
   • Allow the Remote Desktop app through the firewall.
4. Verify IP Address: Ensure you are using the correct IP address or hostname of the host computer.

2. Credentials Did Not Work

This error shows up when you enter your username and password, but the connection is denied.

Possible Causes:

• Incorrect username or password.
• The account used does not have remote access permissions.

Fixes:

1. Recheck Credentials: Make sure you’re using the correct username and password.
2. Allow User Access:
   • On the host computer, go to Remote Desktop Settings.
   • Add the username under Allowed Users.
3. Check Account Permissions:
   • Ensure the account is not disabled or locked.

3. Black Screen After Connecting

Sometimes, the client only sees a black screen after connecting to the remote computer.

Possible Causes:

• Network issues causing screen refresh problems.
• Display driver issues on the host computer.

Fixes:

1. Check Network Stability: Switch to a wired connection or improve your Wi-Fi signal.
2. Update Display Drivers:
   • On the host computer, go to Device Manager.
   • Update the display adapter drivers.
3. Restart the Remote Desktop Service:
   • Open the Run dialog (Win + R).
   • Type services.msc and restart the Remote Desktop Services.

4. Remote Desktop Connection Freezes or Lags

A slow or laggy connection can make RDP unusable. This issue is often related to internet speed.

Possible Causes:

• Low bandwidth or unstable connection.
• High resource usage on the host or client device.

Fixes:

1. Check Internet Speed: Ensure both client and host have sufficient bandwidth (at least 10 Mbps).
2. Optimize RDP Settings:
   • Before connecting, click Show Options in the RDP client.
   • Lower the display resolution and disable unnecessary features like animations and desktop backgrounds.
3. Close Background Applications: Free up resources on both devices by closing unused programs.

5. Remote Desktop Protocol Encryption Error

This error occurs due to mismatched security settings between the client and the host.

Possible Causes:

• Host or client is running an outdated version of RDP.
• Insecure encryption settings on the host.

Fixes:

1. Update Both Devices: Make sure Windows and RDP clients are up to date on both the host and client devices.
2. Modify Encryption Settings:
   • On the host computer, open the Group Policy Editor (Win + R, type gpedit.msc).
   • Navigate to Computer Configuration > Administrative Templates > Windows Components > Remote Desktop Services > Remote Desktop Session Host > Security.
   • Set the option Require use of specific security layer for remote (RDP) connections to SSL.

Tips to Avoid RDP Errors

1. Use a Stable Internet Connection: A strong network minimizes most RDP issues.
2. Update Software Regularly: Keep your operating system and RDP software updated.
3. Configure Security Properly: Use strong passwords, enable Network Level Authentication (NLA), and secure your RDP port.
4. Test Connections Beforehand: Always check your RDP setup before relying on it for critical tasks.