Last week I had an unfortunate experience; I ignored the expiration warning of a bunch of nested ESXi hosts and allowed the license to expire.

Rather then logging into a bunch of individual hosts to apply a key, I wrote a quick script that will connect to vCenter, ensure all the licenses are the correct one, and then reconnect the hosts.

It’s not pretty, but it’s effective should this happen to you.

Here is a link to take a look

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