Configure the pam_passwdqc.so plug-in to determine the basic standards all passwords must meet.
1. Log in to the ESXi Shell and acquire root privileges.
2. Open the passwd file with a text editor: vi /etc/pam.d/passwd
3. Edit the following line:
password requisite /lib/security/$ISA/pam_passwdqc.so retry=3 min=8,7,6,5,4
This action will decrease system password requirements.