In Control-M Configuration Manager (CCM), when setting up a connection profile in Control-M MFT plug-in and when testing the connection profile, an error message appears in a display with the following error messages:

Failed to validate 'XXXXXX'

Account XXXXXX validation failed:
Failed to validate host account: Can't connect to host 'yyyyyyyyy'.
Error: Problem with authentication or login. Please check your credentials

In the logs ($Agent Home Directory/proclog/ctmmft*log and $Agent Home Directory/proclog/ctmhub.log) you can see the following messages:

In ctmmft-921200.log:

2024-02-28 13:17:49,563 WARN [qtp176683244-25] (SftpWrapper:347) -  com.jcraft.jsch.JSchException: Auth fail for methods 'password,keyboard-interactive,publickey'
com.jcraft.jsch.JSchException: Auth fail for methods 'password,keyboard-interactive,publickey'

In ctmhub.log:

2024-02-28 13:17:49,543 ERROR [sshd-SshServer[6cb662e8](port=1222)-nio2-thread-1] (PAMUserManager:60) - Can't authenticate user myuser
org.jvnet.libpam.PAMException: pam_authenticate failed : Authentication failure

Consult your System Administrator for assistance as needed:

1. Access the file /etc/pam.d/passwd
2. Make sure that the lines auth include system-auth and account include system-auth are present in the file as shown below:

##################################
 #%PAM-1.0
auth        include system-auth
account  include system-auth
password include system-auth
password requisite pam_cracklib.so retry=3
##################################

Otherwise, add those lines.
Below you can see the difference between the wrong configuration and the right configuration