STIGUI
V-220728CAT II — Medium severitySV-220728r958478_rule

The Windows PowerShell 2.0 feature must be disabled on the system.

Rule version WN10-00-000155 · STIG v3 · 2025-09-24

Discussion

Windows PowerShell 5.0 added advanced logging features which can provide additional detail when malware has been run on a system. Disabling the Windows PowerShell 2.0 mitigates against a downgrade attack that evades the Windows PowerShell 5.0 script block logging feature.

Check

Run "Windows PowerShell" with elevated privileges (run as administrator).

Enter the following: Get-WindowsOptionalFeature -Online | Where FeatureName -like *PowerShellv2*

If either of the following have a "State" of "Enabled", this is a finding.

FeatureName : MicrosoftWindowsPowerShellV2 State : Enabled FeatureName : MicrosoftWindowsPowerShellV2Root State : Enabled

Alternately: Search for "Features".

Select "Turn Windows features on or off".

If "Windows PowerShell 2.0" (whether the subcategory of "Windows PowerShell 2.0 Engine" is selected or not) is selected, this is a finding.

Fix

Disable "Windows PowerShell 2.0" on the system.

Run "Windows PowerShell" with elevated privileges (run as administrator). Enter the following: Disable-WindowsOptionalFeature -Online -FeatureName MicrosoftWindowsPowerShellV2Root

This command should disable both "MicrosoftWindowsPowerShellV2Root" and "MicrosoftWindowsPowerShellV2" which correspond to "Windows PowerShell 2.0" and "Windows PowerShell 2.0 Engine" respectively in "Turn Windows features on or off".

Alternately: Search for "Features". Select "Turn Windows features on or off". De-select "Windows PowerShell 2.0".

Identifiers

Group ID
V-220728
Group title
SRG-OS-000095-GPOS-00049
Rule ID
SV-220728r958478_rule
Check ID
C-22443r554669_chk
Fix ID
F-22432r554670_fix