Problem
There is a defined connection limit in ScrewDrivers Print Server Agent v6 and Tricerat License Server v2. The setting defines a limit for active concurrent connections to the server. When the limit is reached, no new connections will be established with the server, resulting in failed license checks, failed printer queries, or failed print jobs. The default limit of 256 is in place to prevent the server from becoming unstable due to excessive resource usage.
If logging is turned on for the license server or print server, the following line will appear in the log file:
FAIL: Connection limit of 256 reached on port 3550. Connection refused.
Solution
If the connection limit is reached during normal production operation, the limit can be safely increased. This is sometimes necessary in large environments.
- Run
regedit.exe - Open the key
HKEY_LOCAL_MACHINE\SOFTWARE\triCerat\Simplify Licensing - Add a new REG_DWORD value named
ConnectionLimit. Set the value data to the max simultaneous connections. The default value is 256. Setting this value to 0 will disable the limit, allowing unlimited connections.
Tricerat Recommendation
If 256 is insufficient, Tricerat recommends increasing the value to 512 or 1024. Disabling the limit is generally safe but removes any protection of connection counts consuming the system.
You must re-start the service before the new setting takes effect.