Verified steps

Navigate the registry like a filesystem: Set-Location HKCU:\Software\MyApp — HKLM:\ and HKCU:\ are the two built-in PSDrive roots.
Read a value: Get-ItemProperty -Path 'HKCU:\Software\MyApp' -Name 'Version'
Create a new key and value: New-Item -Path 'HKCU:\Software\MyApp' -Force; New-ItemProperty -Path 'HKCU:\Software\MyApp' -Name 'Version' -PropertyType String -Value '1.0'
Update an existing value: Set-ItemProperty -Path 'HKCU:\Software\MyApp' -Name 'Version' -Value '2.0'
Remove a value: Remove-ItemProperty -Path 'HKCU:\Software\MyApp' -Name 'Version'; remove an entire key: Remove-Item -Path 'HKCU:\Software\MyApp' -Recurse

Known gotchas

Writing to HKLM:\ requires an elevated (Administrator) PowerShell session; HKCU:\ is writable by the current user without elevation.
Use New-ItemProperty to create a value that does not yet exist, and Set-ItemProperty to modify one that does; using Set-ItemProperty on a nonexistent value returns an error.
Property types in PowerShell (String, DWord, QWord, Binary, MultiString, ExpandString) correspond to REG_SZ, REG_DWORD, etc.; choose the correct type or applications may misread the value.

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Automate Windows application configuration by importing and exporting registry hives with reg.exe

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Write a PowerShell script that schedules itself as a recurring background job using Register-ScheduledJob

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Automate Windows Registry reads and writes from PowerShell using the registry provider and item property cmdlets

Verified steps

Known gotchas

Related routes

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