Back in the days we actually had to use this trick. We knew we had enough licenses but at some point people started complaining that others wouldn't give back shared licenses.
It turned out the server didn't register them in when someone signed off.
So after troubleshooting we ended up doing exactly what this trick is protecting against, setting the server clock to somewhere in the future.
Worked nicely back then.
This was just as I left that place, a few weeks later my college told me they had found the problem: our previous it manager had installed a new instance of the license server on a faster machine. He had not installed the license files (nor documented it anywhere) though so the new server would just say thank you and discard the license token whenever anyone signed out.
It turned out the server didn't register them in when someone signed off.
So after troubleshooting we ended up doing exactly what this trick is protecting against, setting the server clock to somewhere in the future.
Worked nicely back then.
This was just as I left that place, a few weeks later my college told me they had found the problem: our previous it manager had installed a new instance of the license server on a faster machine. He had not installed the license files (nor documented it anywhere) though so the new server would just say thank you and discard the license token whenever anyone signed out.