IF YOU ARE SEEING ANY OF THE ABOVE ERRORS BELOW IS THE FIX FOR IT.
This problem is because of the Oracle CredSSP problem which occurs in windows 7, 8, and 10 after May 2018, Even if you enter the correct RDP logins, Windows will prompt that the user logon failed
The fix is very simple
Step 1: Go to this link and download the registry file, this file was provided by Microsoft after the CredSSP error occurred after the windows update in March 2018 FIX DOWNLOAD LINK> https://share.getcloudapp.com/geuANNj0
Step 2: Download the registry file then Right-click on the file and press Merge, then click YES to add the registry after which your RDP will connect seamlessly with the RDP.
NOTE: This FIX is only a ONE TIME FIX. From next time, the RDP will work perfectly fine and without any issues.