Update-Help is a PowerShell cmdlet that downloads and installs updated help files for available commands.
Update-Help downloads and installs current PowerShell help files. Run it early so Get-Help shows complete rather than abbreviated command guidance. section 3.2
Use these practical patterns:
Run Update-Help on an internet-connected computer, then repeat it about monthly. section 3.2
Add -UICulture en-US when the current culture prevents the update from working. section 3.2
For offline computers, obtain help with Save-Help and use Update-Help -Source to read a shared local copy. section 3.2
Refresh local help
Open PowerShell and run Update-Help. After it completes, try help Get-Process again; the partial-help warning should be replaced by fuller help. section 3.8section 3.9
How Learn PowerShell in a Month of Lunches: Fourth Edition, Covers Windows, Linux, and macOS covers it
How deep it goes
Explains downloading, culture selection, monthly maintenance, and offline sources without detailing help-file internals.
Examples
Uses Update-Help, help Get-Process, Save-Help, and Update-Help -Source in connected and offline scenarios.
What it assumes
Assumes basic PowerShell access and an internet connection for initial updates; teaches the refresh procedure directly.
What you can do after
Operate/configure PowerShell help by refreshing local files and directing updates to a shared offline source.
How it connects
Connects Update-Help with Get-Help, Save-Help, modules, and online or shared help sources.
help fileconfigures · A PowerShell help file is documentation describing a command, feature, or concept, including its syntax, parameters, behavior, or usage.
PowerShell help systemuses · The PowerShell help system is an integrated documentation facility for discovering and learning about PowerShell commands, language constructs, and features.
This explainer was generated by Manning's knowledge graph from the text of Learn PowerShell in a Month of Lunches: Fourth Edition, Covers Windows, Linux, and macOS. The section links point to the parts of the book it draws on.
