eDir 8.8 SP8

NDS log showed a 'errno 88 returned as -255' during non=production hours. In
the morning all users could log into the system, however their drive
mappings were absent. Site restarted the server to regain functionality.
Does anyone know what the errno 88 is indicating?

In advance, thanks.

This email is free from viruses and malware because avast! Antivirus protection is active.