We have ArcGIS license server running on one machine but now machine's IP is going to change. Will it impact Anything related to licneses.
Changing the IP Address on the license manager server will corrupt the authorized licenses. I suggest the admin deauthorize all licenses on the license manager. Then change the IP Address. Once completed, the admin can authorize the licenses back. If you're not confident with the process, I suggest you contact Esri Technical Support. An analyst can walk you through the process.