New Users cannot authenticate

[nschmach]

When connecting to licensed CoreFTP Server new users are unable to authenticate.
Pre-existing users are connecting without issue, but any new user returns the following error.

FTP connection error - Invalid username or password reported by server
Can't establish connection --> <server>.com:22 @ Fri May 04 15:41:24 2018 (10038-30015)

Have attempted to validate with multiple users.

Using standard password and connecting with CoreFTP LE.

Core FTP Server 1.2 build 589.1

[ForumAdmin]

You may be editing a duplicate config.dat file. "run as admin" at all times.

[nschmach]

Am using "Run as Admin" during the sessions where I am creating the users.

Checked the config.dat file in the options path and it is getting updated with the new users. Moved it to a new location to make sure there wasn't some other odd thing happening with it, and it is still not allowing new users to authenticate.

[nschmach]

Finally found the issue.

Ran a netstat -anb command and found that there were hundreds of TCP connections stuck in a CLOSE-WAIT status from the coresrvr.exe. When this process was ended, the sessions were released and the newly created users were able to properly log in.

[ForumAdmin]

it might have something to do with the port exhaustion problem that was fixed in build 589.42