远程桌面连接服务器每次均需登录，此前未出现该情况，请问原因？

Hey there! Let’s walk through the most likely reasons your Remote Desktop (RDP) connection is now asking for a password and showing a user list, when it never did before:

• RDP Configuration Got Tweaked
  Someone (or a system update) might have changed the server’s Remote Desktop settings. Check the local group policy on the server by opening gpedit.msc, then navigating to Computer Configuration > Administrative Templates > Windows Components > Remote Desktop Services > Remote Desktop Session Host > Security. Look for settings like "Always prompt for password upon connection" or "Require user authentication for remote connections by using Network Level Authentication" — if these were recently enabled, that’s probably why you’re seeing the prompt now.

• User Account Changes
  If your account’s permissions were modified, your password expired/was reset, or new user accounts were added to the server with RDP access, RDP will default to showing all eligible users and requiring fresh authentication. This is a standard security response when account settings shift.

• Windows Updates Triggered Security Resets
  Recent Windows updates (especially security patches for RDP) often reset default settings to enforce stricter security. Microsoft regularly hardens RDP to prevent vulnerabilities, so an update might have turned on password prompts and user selection where they were previously disabled.

• Network Level Authentication (NLA) Was Enabled
  NLA is a more secure RDP authentication method that verifies your identity before establishing a session. If NLA was disabled before and got turned on (either manually or via an update), you’ll now see the user list and password prompt as part of this enhanced security check.

• Third-Party Security Tools Are Enforcing Rules
  Antivirus, firewall, or endpoint protection software on the server might have updated their security policies. Many tools automatically block less secure RDP configurations (like auto-login) and force password verification to reduce breach risks.

内容的提问来源于stack exchange，提问作者Ian Warburton