"Because this computer does not have a Terminal Server Client Access License for remote session segments" SOLUTION

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Windows supports login by only two end users by default. If the "terminal connection exceeds the maximum connection", you can:
1. Run "tsmmc. MSC, open the Remote Desktop Connection, add a new connection, enter the IP address of the remote server, remote login account and password, and log on to the remote server desktop. In this way, you can log on to the Remote Desktop at any time.
2. log on to the faulty server, click Start, point to administrative tools, and then click Terminal service configuration ".
3. Click "Server Settings" and double-click "Authorization mode ".
4. Change "Authorization mode" to "per user", and click "OK ". This problem will not occur in the future.
Cause: Window Server 2003 does not manage "User Cal ". This means that even if there is a "User Cal" in the License Server database, it will not be used less. In this way, the Administrator will not be deleted according to the requirements of the "End User License Agreement" (EULA) so that each user has a valid Terminal Server (TS) Cal. If the "device Cal" is not used, if not every user has a "User Cal", it will violate the EULA.
I found a solution on the Internet:
1. Change the terminal server authorization mode from "per device" to "per user" on the server ".
2. on the client, navigate to the following registry subitem: HKEY_LOCAL_MACHINE \ SOFTWARE \ Microsoft \ mslicensing and delete mslicensing. To avoid exceptions, you can export the registry key first.
I used the second solution.