Passwords that contain only alphanumeric characters are easy to discover with several publicly available tools. You can enforce users to use a variety of characters in their passwords. This makes it difficult for a brute force attack to successfully crack the password.
Follow the below steps in GPO to resolve the misconfiguration.
Configure the policy value for Computer Configuration -> Windows Settings >> Security Settings >> Account Policies >> Password Policy >> "Password must meet complexity requirements" to "Enabled".
Does remediation require reboot?
Vulnerability Manager Plus tracks security configurations and remediate misconfigurations in your network systems from a centralized console. View a list of all the security misconfigurations detected by Vulnerability Manager Plus.