TL;DR — Quick Summary

Fix CONTPAQi license activation errors: license server connection failures, invalid serial numbers, session limit reached, and license transfer between computers.

CONTPAQi License Activation Errors

CONTPAQi products require license activation through a local or network license server. When activation fails, access to the software is blocked.

Common Errors and Solutions

1. Cannot Connect to License Server

Solution: Start the license server service, verify port 5555 is open, and confirm the server path in client configuration.

2. Invalid or Already Registered Serial

Solution: Verify serial format. If already registered, contact CONTPAQi support to release the license.

3. Available Licenses Exhausted

Solution: Check connected users in the license manager. Restart the service to clear orphan sessions.