Important Note: Keysight License Manager 6 has been discontinued and is replaced by PathWave License Manager (PLM v7.3 and higher) which is fully feature compatible.

Keysight recommends you download and use PathWave License Manager for installing your licenses and for other licensing management tasks. 

If KLM6 was used to set up a license server to serve floating licenses to other clients then you'll need to download and set up Keysight License Server on the same machine to maintain that function.