Other causes include security policy issues, account lockout, and problems with DNS or firewall settings. Now that you know the possible causes of the error, lets discuss the solutions.
1. Revert the Username
Sometimes, just changing the username back can fix Remote Desktop login problems. If the username was changed, even by mistake, or is saved wrong, it can stop the login from working. By setting it back to what it was before, you make sure the Remote Desktop uses the right login details that the server knows.
2. Edit Windows Security Policy
Modifying Windows Security Policy fixes permission issues that block Remote Desktop connections. By changing settings in the Local Security Policy, especially the “Allow log on through Remote Desktop Services” option, you make sure your account or user group has permission to access the remote system.
3. Edit Local Group Policy
By adjusting the “Allow log on through Remote Desktop Services” policy, you make sure authorized users can access the system remotely. This change is important when strict security policies block access because it gives needed permissions to the user or group.
4. Edit Registry
This issue can be resolved by adjusting how the system handles specific security protocols that Remote Desktop relies on. If these protocols are set up incorrectly or blocked, like after a system update, they can prevent proper credential checks.
5. Disable Windows Hello sign-in (If applicable)
If Windows Hello is on, the system may use biometric or PIN login instead of a regular password. This can cause issues with Remote Desktop, which usually needs a standard username and password.
