FLEXnet Licensing error:-15,10.  System Error: 10049 "WinSock: Invalid address"

Discussion created by sivasilam on Jun 9, 2010
Latest reply on Sep 8, 2011 by gareth.baker

I am having ArcGIS desktop 9.3 version in windows XP operating system.  The license was working fine without any issues.  But recently I am getting an error message "FLEXnet Licensing error:-15,10.  System Error: 10049 "WinSock: Invalid address", and having problem opening ArcGIS.  I tried everything possible, stop/start/re-read etc.  But it is not working.  When whenever I try to start the server after stopping, I am hearing a warning sound typical in windows.  When I perform the server diagnostics in FLEXLM, I am seeing error message such as "Cannot connect to license server", ... I will try to determine what the problem is..."telnet" port (23) on node XXXX does not respond"

I would appreciate a solution to this. 

Thanks a bunch.