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How to Fix: RDP “an authentication error has occurred”
Fix the authentification error using these quick fixes
5 min. read
Updated onJuly 24, 2024
updated onJuly 24, 2024
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Some users have stated thatAn authentication error has occurrederror message pops up on their Windows desktops.
The error occurs when they try connecting to another PC with theRemote Desktop Connection app.
This issue has become increasingly prevalent since May 2018 updates forWindows 10. These are a few resolutions that might fix theauthentication error that has occurrederror in Windows.
How can I fix Remote desktop an authentication error has occurred?
1. Adjust the Remote Desktop Settings
To fix theRemote desktop an authentication error has occurred the function requested is not supportederror, you need to adjust remote desktop settings by doing the following:
2. Enable Encryption Oracle Remediation
To fixThe remote desktop an authentication error has occurred, the function requested is not supportederror, try enabling theEncryption Oracle Remediationpolicy setting with the Group Policy Editor.
3. Edit the Registry
In order to fix theRemote desktop authentication error that has occurred, the function requested is not supportederror, you need to edit theAllowEncryptionOracleregistry key.
4. Remove the May Updates
On theRemote Desktop, an authentication error has occurred the function requested is not supportederror is primarily due to theMay KB4103727 Windows 10 update.
Thus, removing the KB4103727 update from Windows on the client desktop or laptop might fix the Remote Desktop connection error. You can uninstall those updates as follows.
5. Perform an in-place upgrade
If you want to fixAn authentication error that has occurred code 0x80004005error, it’s advised to perform an in-place upgrade. To do that, follow these steps:
If you need more support in terms of remote desktop software solutions, you can visit our article where you will find thebest remote troubleshooting toolsfor your Windows 10 PC. We suggest you tryMikogo, a lightweight remote control software that efficiently offers remote troubleshooting support.
Those are some of the resolutions that will kick-start your Remote Desktop connection.This postalso provides further tips for fixing Remote Desktop connections.
Start by checking the Remote Desktop Protocol. If that doesn’t solve the problem, read ourcomplete guide to fix the 0x204 error.
More about the topics:Remote Desktop Connection
Matthew Adams
Windows Hardware Expert
Matthew is a freelancer who has produced a variety of articles on various topics related to technology. His main focus is the Windows OS and all the things surrounding it.
He is passionate about the tech world, always staying up-to-date with the latest and greatest. With an analytical view, he likes problem-solving, focusing on errors and their causes.
In his free time, he likes to read and write about history and tries to always develop new skills.
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Matthew Adams
Windows Hardware Expert
He is passionate about everything surrounding Microsoft’s OS, focusing on troubleshooting guides & tips for everyday problems.
