(run as admin):
(if dual‑stack breaks old clients):
LM_IPV6_ENABLE=0 Set as system environment variable, then restart service. 8.1 Enable Detailed Logging Add to license file: nlm11.18.0.0-ipv4-ipv6-win64.msi
netstat -an | findstr ":27000" Look for 0.0.0.0:27000 (IPv4) and [::]:27000 (IPv6). 6.1 Windows Service Control net start "FlexNet License Server" net stop "FlexNet License Server" 6.2 Manual Start with Debug Logging Stop service first, then: (run as admin): (if dual‑stack breaks old clients):