Error:

When you try to login to a server through rdp, you ll end up in “No Remote Desktop License Servers Available” error or you cannot login as no remote desktop license server is available error.

Root Cause:

If you have installed rds role on a windows server OS, by default only 3 logins are allowed. One console session and two rdp sessions. This works for 120 days. After this time is completed, you cannot login to the server. You will endup in above mentioned errors.

To solve this, you should create a rds host server and add RDS licenses in it and point all your other windows servers to this rds server.

There are different reasons why we might endup in this issue:

• Remote desktop license server is not applied on the windows server you are trying to connect.
• You applied rds server details through a GPO, applied to an OU, with a windows server in that OU. For whatever reason, you moved a windows server out of that OU.

Solution:

In registry, you will find a grace period folder. You should delete it to fix this issue.

Open registry editor and go to Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server\RCM\GracePeriod and delete GracePeriod key (folder). Restart the server (Mandatory).

You cannot login to the server, so how to perform this?

• If you have remote registry service enabled, you can goto registry editor in a different server, open registry for the affected server and delete the above key.

• If remote registry service is also not running, using psexec start the service and then open remote registry and delete the key.