The Remote Desktop allows you to connect and access two computers remotely. Facing the authentication error when using the remote desktop can be disturbing as it will prevent you from accessing the other computer. Remote Desktop Authentication error is encountered with the error message-
โAn authentication error has occurred. The function request is not supported.โย
Issues like such are common with Windows, and itโs not a big deal if you encounter the Remote Desktop authentication error on Windows 11. This article will guide you with different ways to help fix this issueย
Fix Remote Desktop Authentication Error on Windows 11
Knowing the root cause of the issues makes it much easier to fix. If your PC prompts you with Remote Desktop Authentication Error, the possible reasons can be invalid login details, remote desktop services not running, antivirus or other third-party antivirus software, etc.
Given below are various troubleshooting steps to help fix the Remote Desktop Authentication error on Windows 11-
1. Ensure Remote Desktop is Enabled
Generally, users forget to turn on the Remote Desktop feature on their PC and then encounter such an issue. To turn on the remote desktop on Windows 11, you can follow the steps given below-
- Use theย Windows + Iย keyboard shortcut to open Windows 11ย Settings.
- Under theย Systemย tab on the left sidebar, click onย Remote Desktop.
- Now, enable the toggle forย Remote Desktopย and then click onย Confirmย to turn on Remote Desktop.
2. Ensure you are Entering the Correct Credentials
This issue can be encountered if you use invalid remote desktop account credentials. Just check the credentials to see whether they are correct or not. If you have been trying to use the incorrect credentials, use the correct ones.
3. Rollback Windows Update
If you started facing this issue after installing a Windows update recently, that might be the real culprit. Uninstalling the recently installed update should help fix the Remote Desktop Authentication error on Windows 11. You can do so through the steps mentioned below-
- Open theย Settingsย app on Windows PC.ย
- Click onย Windowsย Updateย on the left pane.ย
- Now, click onย Update History, scroll down, and then click onย Uninstall Updates.
- Look for the recently installed update and click onย Uninstallย button next to it; click onย Uninstallย again to confirm uninstalling the update.
- Now reboot your PC to apply the changes.ย
4. Turn Off Windows Firewall
You might face this issue due to the Firewall on your PC. Try turning the Windows Firewall off and see if the issue is still encountered or not.ย
- Open theย Start Menuย and search forย Windows Defender Firewall; click on the relevant option from the search result.ย
- On the left pane, click onย Turn Windows Defender Firewall on or off.
- Check the checkbox forย Turn off Windows Defender Firewall (not recommended)ย for bothย Private network settingsย andย Public network settings.ย
- Click onย OKย to save the changes and then close the Control Panel.ย
Note-ย If you have any third-party antivirus on your PC, then Firewall settings will be managed by it. You will have to disable the firewall from the third-party antivirus if you are using one.ย
5. Make Changes to the Registryย
You can edit the Registry on your PC, which should fix the issue. To do so, follow the steps given below-
- Open theย Registry Editorย from theย Start Menu.
- Head to the following location here-ย
-
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\CredSSP\Parameters
-
- Here, double-click onย AllowEncryptionOracleย to edit it.ย
- Now, set theย Value Dataย toย 2ย and then click onย OK.ย
Noteโ Ifย AllowEncryptionOracle is unavailable, right-click on the empty space on the right, click New,ย and thenย DWORD (32-bit) Value. Name the new DWORD asย AllowEncryptionOracle.ย
6. Enable Encryption Oracle Remediation
If encryption oracle remediation is turned off, then that may also cause the Remote Desktop Authentication error in Windows 11. You can enable it through Group Policy Editor by following the steps given below-
- Pressย Windows + Rย key combo, typeย gpedit.msc, and pressย Enter.
- Navigate to the following address from the left pane-
-
Computer Configuration>Administrative Templates>System>Credentials Delegation
-
- On the right side, double-click onย Encryption Oracle Remediationย to edit it.
- Selectย Enabled, click onย Apply, and then onย OK.
- Press theย Windowsย key, typeย Command Promptย and open it.ย
- Here, execute the command
-
gpupdate /force
-
- Close Command Prompt and then restart your PC.ย
7. Disable Network Level Authentication on RDP Server
Another reason for facing this issue is network-level authentication enabled on the RDP server. Try turning it off when using Remote Desktop; you will no longer encounter the issue.ย
- Open theย Run dialog usingย Windows + R. Typeย sysdm.cplย and pressย Enter.
- Click on theย Remoteย tab here.ย
- Selectย Allow remote connections to this computerย and uncheck the option forย Allow connections only from computers running Remote Desktop with Network Level Authentication (recommended).
- Click onย Applyย button and then onย OK.ย
- Now restart your PC to apply the changes to your system.ย
Final Words
If you keep facing an authentication error when using the remote desktop, this article should help you. Upon successfully following the methods mentioned above, you should no longer encounter the Remote Desktop Authentication error on Windows 11. If you face difficulty with either of the steps, then let us know through the comments section.ย