The "Account Locked Out" error in Windows Remote Desktop Protocol (RDP) typically occurs due to multiple failed login attempts, often caused by incorrect password entries or a security policy that restricts access after a certain number of failed attempts. 

Step 01: Open the Group Policy Editor through Settings.

Step 03:  Navigate to Computer Configuration

Step 04: Go to Windows Settings

Step 05: Select Security Settings

Step 06: Select Account Policies

Step 07: Select Account Lockout Policy

Step 08: Double-click on Account Lockout Threshold.

Step 09: Adjust the Account Lockout Threshold