>

Download the Latest PowerShell Help Files (Update-Help)

Fill in complete Get-Help content — examples, parameter descriptions — that ships missing on fresh installs.

WindowshelpdocumentationpowershellLow risk
Run Update-Help -UICulture en-US in an admin PowerShell to download current help for all installed modules.

01Command

Command
$ Update-Help -UICulture en-US

02What it does

Windows ships PowerShell without full help files, so Get-Help for many cmdlets shows only a syntax stub. Update-Help fetches the latest help XML for every module on the machine; afterwards Get-Help New-NetFirewallRule -Examples shows real worked examples. Run it every year or so, and after installing new modules.

03Risk

RiskLow risk
RequirementsRun PowerShell as administrator to update help for all users; needs internet access.
!Warning: On non-English systems Update-Help can fail for modules lacking localized help — fall back with -UICulture en-US as shown.

04Undo

✓No undo needed — this command does not change persistent state.

05Sources

  • Update-Help
    Microsoft Learn · vendor-doc · 2026-09-17
    Evidence: Documents Update-Help for downloading and installing the newest help files from the internet or a file share.

Last verified: 2026-09-18 · Category: Developer

06Related solutions

Grep on Windows: Select-String
Windowssearchtextpowershell

Search inside text files and logs with regex, returning file, line number and match.

Low risk ✓ 2026-09-17
Zip Files with Compress-Archive
WindowsZip & Archivesarchivepowershell

Create or update a .zip from any files or folder contents straight from PowerShell.

Low risk ✓ 2026-09-17
Test a TCP port connection on Windows with Test-NetConnection
Windowsnetworktroubleshootingpowershell

A built-in PowerShell one-liner that answers 'is port 5432/3389/443 actually open through this network?' — no telnet client needed.

Low risk ✓ 2026-09-17