Check your current PowerShell version with `$PSVersionTable.PSVersion`
Determine whether you need Windows PowerShell 5.1 or PowerShell 7+
For PowerShell 7+, download the latest installer from the official PowerShell GitHub releases page
Run the installer and follow the prompts
On Windows, install via Microsoft Store if available
On Windows, install via winget with `winget install Microsoft.PowerShell`
On macOS, install via Homebrew with `brew install –cask powershell`
On Linux, install using your distribution’s package manager or Microsoft’s package repository instructions
Verify the upgrade with `pwsh -v`
Update your profile, scripts, and shortcuts to use `pwsh` instead of `powershell` if needed
Restart any open terminals after installation