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How to extend terminal server trial license
The terminal trial license period is for 120 days. What if you are still undecided to buy licenses but want terminal server trial license to be extended for another term. Though this is an easy by deleting  l$rtmtimebomb registry key under Grace Period. It looks so simple but no matter if you are logged in as administrator account, you will not be able delete saying permission denied. Taking ownership or elevating rights will not work either.
Here comes to PsExec Tool will be your savior here. How to use it? Follow below simple steps and you will be good to go:

Download Sysinternal Suite from Technet.
Extract the compressed folder. Now you will be see many utilities including PsExec and PsExec64. If your Terminal server is 64 bit then use PsExec64. The syntex is as below:

psexec64 -s -i regedit.exe

This load registry with supreme elevated rights. Browse to below registry and delete   l$rtmtimebomb key

HKLM\SYSTEM\CurrentControlSet\Control\Terminal Server\RCM\GracePeriod

Deleting this key will get you activate terminal trial licenses on your server
Deleting a registry may cause your server to crash or stop responding so make sure to export settings before deleting any registry and you should have complete backup of your server and capability to restore from backup
Any suggestion and comment is much appreciated.

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