How to delete a license from a License Server?

Foreword

When you use Network License mode, it might be necessary to delete licenses previously added. 

This is done with a program named License Manage Administration, also known as Wlmadmin.

Prerequisites

• You have installed the license server.
• You have prepared WlmAdmin program on a computer that has network access to the license server.
  The license server itself is the simplest choice.
  WlmAdmin is part of the Sentinel RMS Tools package.

SentinelRMS x.y.z-WlmAdmin package can be downloaded from the Download page

Procedure

From the license server, or from any computer in the same network:

• Start WlmAdmin.
• Find the server (if necessary, add it to the defined server list). 
• Find the license feature name.
• Find the license.
  You can check the current state and the start and end date if there is more than one license for the same license feature name.
• Click on Remove License and confirm.

A confirmation message should be displayed, and the deleted license should not be visible in the left pane.

Alternative

License server configuration is saved in a text file named "lservrc"

Its default location is

%CommonProgramFiles(x86)%\Thales\Sentinel RMS License Manager\WinNT

%CommonProgramFiles(x86)%\SafeNet Sentinel\Sentinel RMS License Manager\WinNT

So, you can also, after stopping the relevant service, edit the file, and restart the service.