A prompt pops up when logging in: To log in to this remote computer, you must be granted permission to log in through Terminal Services. By default, members of the "Remote Desktop Users" group have this privilege. If you are not a member of the "Remote Desktop Users" group or other group that has this privilege, or if the "Remote Desktop Users" group does not have this privilege, you must grant these permissions manually. This fault is usually caused by the installation of the terminal server and the successful activation of the terminal server. Generally speaking, the following methods can basically solve the problem. Most of the solution settings are set in the system security policy: 1. Confirm that domain users who need to log in using Remote Desktop are added to the Remote Desktop Users group. 2. Open “Active Directory Users and Computers, right-click the properties of the domain user who wants to log in using Remote Desktop, click the “Terminal Services Profile” tab, and then click to select “Allow login to the terminal Server & rdquo; checkbox. 3. On Windows Server 2003 2003, open the appropriate security policy, click "Windows Settings & Rarr; Security Settings & Rarr; Local Policies & Rarr; User Rights Settings" and "Right Assignment" in "Rejected by Terminal Services" Double-click on the item to see if there are Remote Desktop Users and the domain user account you need to log in. If you have any, please delete it. 4. On Windows Server 2003, open the appropriate security policy, click on “Windows Settings → Security Settings 2003 Settings → Local Policies & Rarr; User Settings Rights Assignment & rdquo;, double-click on the "Allow Local Login" item , check if there is no Remote Desktop Users, if not, please add. 5. On Windows Server 2003 2003, open the appropriate security policy, click on “Windows Settings → Security Settings → Local Policies & Rarr; User Settings Rights Assignment & rdquo;, double click on the "Reject Local Login" item Check to see if there are Remote Desktop Users and the domain user account you need to log in to. If you have one, please delete it. 6. On Windows Server 2003 2003, open the appropriate security policy, click “Windows Settings → Security Settings → Local Policies & Rarr; User Settings Rights Assignment & "Access to this computer from the network" Double-click to see if there are Remote Desktop Users and the domain user account you need to log in. If you have one, please add it. 7. On Windows Server 2003 2003, open the appropriate security policy, click <; Windows Settings & Rarr; Security Settings & Rarr; Local Policies & Rarr; User Settings Rights Assignment & "Deny access to this computer from the network” Double-click on the item to see if there are Remote Desktop Users and the domain user account you need to log in. If you have any, please delete it. 8. On Windows Server 2003 2003, perform this operation separately from the client, click “Start->Run" and enter “CMD” -> Enter “GPUPDATE/FORCE” to force the refresh of Group Policy and Restart your computer to see if the issue persists.