vshell - error when signing in with User Database user

[zachz]

I'm using the VShell User Database, instead of Windows users. I cannot get any user signed in.

At signin the log has error:

"The User Database file 'C:\Program Files\VanDyke Software\VShell\userdb.txt' has more permissions than expected. The required permissions are to limit all access to only the System account and Administrator group. Users specified in this database will not be allowed to authenticate."

-- and --

"00098: Username lookup failed for user [redacted]: No mapping between account names and security IDs was done."

userdb.txt file appears to have the appropriate permissions for SYSTEM and Administrators group, with additional read permissions for ALL APPLICATION PACKAGES.

On Windows Server 2019 Datacenter.