This has started happening more often, too often actually. When you launch the autodesk network program you get the license finder dialog and you are unable to obtain a license. No biggie, you try the suggestions in our blog: http://blogs.rand.com/support/2012/03/license-finder-.html to no avail.
So, you check the license manager, it seems to be the right version, has licenses per the Server Status Enquiry, so what gives?
Well, if the ports are all open then try the following:
On the license manager machine open the command prompt. Start>run (or search) and enter CMD and hit enter.
Now ping the name of the license manager machine. Note you can find the name in the license manager by going to the System Settings tab, it'll be in the upper left box labeled "Computer/Hostname".) If the name is LMServer then the ping command will look like this:
Once you hit enter, it should give you 4 replies showing the ip address. Something like one of these:
IPV4 (Internet Protocol version 4) replies:
The new IPV6 replies:
Sometimes we received ::1: instead of one of the above.
Reply from ::1: bytes=32 time<1ms TTL=128
When this happens, the Internet Protocol needs to be adjusted.
Note: this should be done by your IT/IS department as it possibly involves editing the registry.
I go to the Microsoft article that explains how to disable IPV6. You can find the knowledge base article at: http://support.microsoft.com/kb/929852.
If I use the manual method, then I'll use the 0x20 value. If I use the "fix it" options, then I'll use the "Prefer IPv4 over IPv6" Fix it button. You will need to reboot the system.