Step 4: Restart your computer and then check if the “An authentication error has occurred” error is gone. To sort out your concern, we suggest that you check the Remote Desktop settings from System Properties to determine if the issue is not related to it. The error seems to be related to Network Level Authentication (NLA) feature in the latest version of Remote Desktop for Windows. Step 2: Navigate to HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\System\CredSSP\Parameters. Enable Remote Connections in Group Policy Editor Then in the tab, If you do not have access to the remote computer, you can. When you are attempting to remotely connect, it is necessary that both the computers have the same security patches installed to avoid security vulnerabilities. Good Article Mohamed! Client and remote are domain-joined and I am admin of these computers (I'm not domain admin). Below are the steps: Navigate to Start > Administrative Tools > Remote Desktop Services > … Step 2: Type sysdm.cpl in the box and then click OK to open the System Properties window. Once in the Group Policy Editor, navigate to the following key: Press Windows + S, type “command prompt” in the dialogue box, right-click on the application and select. Among these, new security rules have been introduced on some CredSSP protocol vulnerabilities in the RDP authentication phase, better known as Terminal Desktop or Remote Desktop. The remote computer that you are trying to connect to requires Network Level Authentication (NLA), but your Windows domain controller cannot be contacted to perform NLA. Here is a quick guide: Step 1: Type regedit in the Run box and then click OK to open the Registry Editor window. You can also try to change the Group Policy settings to fix the “An authentication error has occurred” error. In some cases, the administrator can change the RDP port from default 3389 to something else (although Microsoft does not recommend this). The issue that you’ve encountered about setting up the Remote Desktop Connection may be caused by some settings configuration or some software conflict. Contact Us. In addition to the above solutions, you can also try: Fix: An Authentication Error has occurred (Remote Desktop). Step 7: Reboot your computer and then check if the error is fixed. So, could you confirm if you use Remote Desktop Connection 6.0 client to connect Vista? Copyright © 2020 MiniTool® Software Limited, All Rights Reserved. Microsoft has officially acknowledged the error message and even released a document stating the root and causes of the error. Hopefully after writing this post I’ll remember next time. Follow the detailed instructions below: Step 1: Open the Run box and then type gpedit.msc in the box. Microsoft has officially acknowledged the error message and even released a document stating the root and causes of the error. Click Apply and OK to save changes. 1 – Simply adjust the Remote Desktop settings on the host machine to a lower security level. . "The remote computer that you are trying to connect to requires Network Level Authentication (NLA), but your Windows domain controller cannot be contacted to perform NLA. Step 4: Choose Enabled and then select the Vulnerable option under the Protection Level drop-down menu. If this doesn’t work, restart your computer and try again. What will you do when you encounter the error “An authentication error has occurred”? The next step to to try to fix “remote desktop can’t connect to the remote computer” is to check whether Remote Desktop is enabled. In Remote Desktop Connection 6.0, server authentication verifies that you are connecting to the correct remote computer or server, which may lead to some incompatibility issue. In the Remote Settings on my laptop (the computer I was connecting to), I had it set to only allow connections with Network Level Authentication. The methods are shown below. As a workaround, disable authentication using a new RDP file. Unfortunately this has caused for a large number of users the appearance of the following error when making a remote connection via RDP: When attempting to Remote Desktop (RDP) to a Windows machine, you may receive an error. People using Remote Desktop Connection might face a situation where they experience the error “ An Authentication Error has occurred ” when trying to establish a connection with another remote PC. Award winning disk management utility tool for everyone, Complete data recovery solution with no compromise, Quick, easy solution for media file disaster recovery, Android, iOS data recovery for mobile device. You can disable Network Level Authentication in the System Properties on the Remote tab by unchecking the options “ Allow connection only from computers running Remote Desktop with Network Level Authentication (recommended) ” (Windows 10 /8.1 or Windows Server 2012R2/2016). These security patches are installing through Windows Updates. This is because the causes of this error message can be tracked ranging from incomplete updates to problems in the group policy. One could rollback the security update, but rather than risking other security problems, there’s a quick fix. If you are an administrator on the remote computer, you can disable NLA by using the options on the Remote tab of the System Properties dialog box." This security update addresses the vulnerability by correcting how CredSSP validates requests during the authentication process. From Windows 10, uncheck the option to “Allow connections only from computers running Remote Desktop with Network Level Authentication (recommended)”: From Windows 7, it’s setting the o… When you try to establish a connection with another remote computer using Remote Desktop Connection, you may get an error message saying that “An authentication error has occurred the function requested is not supported”. Published in: Troubleshooting, Windows 10, Windows 7, Windows 8 / 8.1, Windows Vista About the author: Vishal Gupta (also known as VG) has been awarded with Microsoft MVP (Most Valuable Professional) award. ; Click Start Scan to find Windows issues that could be causing PC problems. It seems that the remote connection wanted … The Remote Desktop Mobile application does NOT have Network Level Authentication. Restart your computer and check if the error message is resolved. There is another method you can try to fix the “An authentication error has occurred” error – edit the Registry. Uncheck Allow connections only from computers running Remote Desktop with Network Level Authentication option. Superior record of delivering simultaneous large-scale mission critical projects on time and under budget. An authentication error has occurred. If you do not have Group Policy Editor on your computer, we can use the registry editor to add the key. MiniTool ShadowMaker helps to back up system and files before the disaster occurs. He holds Masters degree in Computer Applications (MCA). We have experience with this software and we recommend it because it is helpful and useful): Free, intuitive video editing software for beginners to create marvelous stories easily. By Sonya | Follow | Last Updated November 26, 2020. Step 5: Reboot your computer and then check if the “An authentication error has occurred” error is fixed. The remote desktop error ‘ An internal error has occurred ’ is often caused by RDP settings or its local group policy security. Try These 6 Methods, A Guide on How to Fix Broken Registry Items via Five Methods. This can be done using the local … ; Click Repair All to fix issues affecting your computer's security and performance ; Restoro has been downloaded by 0 readers this month. The initial March 13, 2018, release updates the CredSSP authentication protocol and the Remote Desktop clients for all affected platforms. If you want to stay constantly protected from malware threats, existing and future ones, we recommend that you install Malwarebytes Anti-Malware PRO by clicking below (we do earn a commision from sales generated from this link, but at no additional cost to you. Step 3: Double-click the AllowEncryptionOracle DWORD to open its Edit DWORD window. That will open up the system properties window, where you need to select the “Remote” tab and make sure to clear the box next to “Allow connections only from computers running remote desktop with network level authentication (recommended)”. Remote Desktop RDP To resolve the issue, change the remote desktop security on the RD server to RDP Security Layer to allow a secure connection using Remote Desktop Protocol encryption. Step 3: Switch to Remote tab, check Allow remote connections to this computer under Remote Desktop section. Each time I do, I solve it and forget about it, so that it stymies me for a few minutes the next time I run into it. Step 4: Click Apply and OK to save the changes. So after applying rule 1 of system administration (turn it off … This error message is not new and has been there in Windows for quite some time. If you have having issues logging into a Windows Server with Remote Desktop Services, below are some things to try. If the issue is with your Computer or a Laptop you should try using Restoro which can scan the repositories and replace corrupt and missing files. Fixed: Remote Desktop An Authentication Error Has Occurred, 6 Methods to Fix the Windows 10 Remote Desktop Not Working Error, Windows Defender Blocked by Group Policy? When you try to establish a connection with another remote computer using Remote Desktop Connection, you may get an error message saying that “An authentication error has occurred the function requested is not supported”. There have been quite a few reports which state that users are not able to use the Remote Desktop Connection client to connect to another system. So how to fix the “Remote Desktop An authentication error has occurred” error? MiniTool Power Data Recovery helps to recover files from PC, HDD, USB and SD card quickly. What’s more, she offers some useful ways to convert audio and video file formats. From File Explorer, choose Computer, right-click and select Properties, then click Change Settings, and go to the Remote tab. I have the same problem with Remote Desktop Manager version : 11.1.11.0 windows build 14316 swithcing off NLM does allow me to login. You can reset the password from the domain controller (for enterprises). People using Remote Desktop Connection might face a situation where they experience the error “An Authentication Error has occurred” when trying to establish a connection with another remote PC. There are three useful methods to fix the “An authentication error has occurred” error in this post: change the remote desktop settings, change the Group Policy settings and edit the Registry. North America, Canada, Unit 170 - 422, Richards Street, Vancouver, British Columbia, V6B 2Z4, Asia, Hong Kong, Suite 820,8/F., Ocean Centre, Harbour City, 5 Canton Road, Tsim Sha Tsui, Kowloon. The Local Security Authority cannot be contacted. Type cmd in the Run box and then click OK to open the Command Prompt window. At the same time, the Remote Desktop connection is successful from Windows 10 based PCs. Make sure that both computers are updated. From File Explorer, choose Computer, right-click and select Properties, then click Change Settings, and go to the Remote tab. You can find several efficient methods to fix the error. When you try to connect a remote computer, but the Windows 10 Remote Desktop not working error appears, then you can find methods to fix the error in this post. แก้ไข Remote Desktop connection แสดง CredSSP linkid=866660 Windows 10 วิธีตั้งค่า Microsoft Edge ให้เปิดเว็บ Google เป็นหน้าแรก If you are looking for a method to fix broken registry items, this post is what you want. Remote Desktop Connection An authentication error has occurred. Before Vista, Remote Desktop Connection 6.0 has been included in the And she aims to help more people to protect their data. Click OK to open the Local Group Policy Editor window. 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