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Minimum Password More Than 15 Chars

Enforcement

  1. Navigate to Computer Configuration -> Policies -> Windows Settings -> Security Settings -> Account Policies -> Password Policy.
  2. Change “Relax minimum password length limits” to Enabled
  3. Change “Minimum password length”.

Supported versions of Windows

Auditing of password lengths are supported on the following versions of Windows. Enforcement of minimum password lengths of 15-characters or more are supported in Windows Server, version 2004, and in later versions of Windows.

Windows versionKBSupport
Windows 10, version 2004
Windows Server version 2004		Included in the released versionEnforcement
Auditing
Windows 10, version 1909
Windows Server version 1909		KB4566116Auditing
Windows 10, version 1903
Windows Server version 1903		KB4566116Auditing
Windows 10, version 1809
Windows Server version 1809
==Windows Server 2019==		KB4571748Auditing
Windows 10, version 1607
==Windows Server 2016==		KB4601318Auditing

Suggested deployment

Domain ControllersAdministrative Workstations
Auditing: If only auditing password usage below a minimum value, then deploy as follows.Deploy updates to all supported DCs where auditing is desired.Deploy updates to supported administrative workstations for new Group Policy settings. Use these workstations to deploy updated Group Policies.
Enforcement: If minimum length password enforcement is desired, then deploy as follows.Windows Server, version 2004 DCs. All DCs must be at this version or a later version. No additional updates are needed.Use Windows 10, version 2004. The new Group Policy settings for enforcement is included in this version. Use these workstations to deploy updated Group Policies.
Sources:
  • https://support.microsoft.com/en-us/topic/minimum-password-length-auditing-and-enforcement-on-certain-versions-of-windows-5ef7fecf-3325-f56b-cc10-4fd565aacc59
  • https://www.sikich.com/insight/how-to-enforce-long-passwords-with-over-14-characters-in-windows/