Before decommision the esx host, its should be unlicensed the license server from host machine. then it will automatically free the licenses. But don't worry, LM Tool provide you to diagonsis the license and can free the license back.
Anuj Modi,
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Anuj Modi,
If you found my answer to be useful, feel free to mark it as Helpful or Correct.
The latest blogs and articles on Virtulization:
anujmodi.wordpress.com