Reversible password encryption must be disabled.

STIG ID: WN10-AC-000045  |  SRG: SRG-OS-000073-GPOS-00041 | Severity: high |  CCI: CCI-000196

Vulnerability Discussion

Storing passwords using reversible encryption is essentially the same as storing clear-text versions of the passwords. For this reason, this policy must never be enabled.

Check

Verify the effective setting in Local Group Policy Editor.
Run "gpedit.msc".

Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Account Policies >> Password Policy.

If the value for "Store password using reversible encryption" is not set to "Disabled", this is a finding.

Fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Account Policies >> Password Policy >> "Store passwords using reversible encryption" to "Disabled".