Hi,
I'm running core ftp server 1.0 build 303 (running as SSH/SFTP service on port 22) at 2 sites on completely different networks and have the same issue on both.
Within roughly an hour of starting the service, all authentication attempts fail, if I restart the service, authentication begins working again. Originally I thought this might be an issue with Active Directory authentication, but I've created a test user wtihin coreftp itself, and this has the same issue.
Any suggestions?