Hello,
I understand that your user can still log in with a valid password. Have you ever tried the shortcut key CTRL+ALT+END to select "Change Password" after login?
You can try the following steps to troubleshoot the problem:
- After enabling the "User must change password at next logon" setting, temporarily disable network level authentication (NLA) to test whether the login is successful.
- Some users reported that they could log in successfully after editing the RDP file properties:
Open the Remote Desktop Connection client and click "Save As"
Edit the saved file in Notepad and add the following line at the bottom:
username:s:Administrator
authentication level:i:2
enablecredsspsupport:i:0
Load the saved file and reconnect.
References:
I hope this helps. If you have any further questions, please contact us.
Best regards
Jacen