In environments using a centralized license manager (like ), error 5677 can sometimes be triggered by a communication break between the workstation and the server.
Once you resolve the immediate issue, implement these best practices: Unable To Obtain License 5677 . License Request For
Error 5677 appeared suddenly on three engineering workstations after a nightly antivirus definition update. Diagnosis: Antivirus quarantined lmgrd.exe and vendor_daemon.exe as "Potentially Unwanted Programs." Solution: Restored files from quarantine, added the license server folder and *.exe to antivirus exclusions. In environments using a centralized license manager (like