# Run as Administrator $latestRelease = Invoke-RestMethod -Uri "https://api.github.com/repos/PowerShell/PowerShell/releases/latest" $assets = $latestRelease.assets | Where-Object name -like "*win-x64.msi" $downloadUrl = $assets.browser_download_url $installerPath = "$env:TEMP\PowerShell-latest.msi" Invoke-WebRequest -Uri $downloadUrl -OutFile $installerPath msiexec /i $installerPath /quiet /norestart Remove-Item $installerPath 3. Updating Windows PowerShell 5.1 Windows PowerShell 5.1 is updated through Windows Update . You cannot manually update it via commands, but you can ensure you have the latest: Check for updates via command line: # Run as Administrator Install-Module PSWindowsUpdate -Force Get-WindowsUpdate Install-WindowsUpdate -MicrosoftUpdate Or use wuauclt (deprecated but still works):
pwsh -c "$PSVersionTable.PSVersion" If you want to install a preview version: update powershell command windows 11
# Check for updates pwsh -c "Update-PowerShell -PassThru" Note: Update-PowerShell is available starting from PowerShell 7.0.3. If winget is unavailable, you can script the download and install: If winget is unavailable, you can script the
usoclient StartScan If you have Chocolatey installed: If winget is unavailable