You're a genius! Thank you everyone who helped. Hopefully others are able to benefit from your efforts.
Seems pure luck but each one makes his own luck!
![Popcorn :popcorn:](https://www.eevblog.com/forum/Smileys/default/EatingPopcorn.jpg)
All done within 1h of code surfing from scratch...
So, my recipe for Joe to find his
new E8357A HostID was:
1 - Delete or rename "c:\Program Files\Agilent\Network Analyzer\gen.lic".
2 - Kill the main app (I assume it's 835x.exe) and run it in a DOS shell with the following param:
835x.exe -954033 - The app will detect the absence of the license file and regenerate it from the EEPROM, due to that special param, using the new HostID.
4 - Then, with the new HostID, one can recalculate the new FLEXlm licenses.
![Cool 8)](https://www.eevblog.com/forum/Smileys/default/cool.gif)