Guide

Running your script, step by step

ZTILITY never changes your PC by itself. It writes a PowerShell file that you run when you are ready — and a second file that puts everything back.

  1. 01

    Build your script

    Pick your options on the Optimizer page, or start from a preset and adjust. Keep “Create Restore Point” on.

  2. 02

    Download both files

    Download ztility.ps1 and the matching undo script. Keep them together in one folder, for example C:\ZTILITY.

  3. 03

    Open PowerShell as administrator

    Press Start, type PowerShell, right-click Windows PowerShell and choose “Run as administrator”.

  4. 04

    Allow the script to run once

    Paste: Set-ExecutionPolicy Bypass -Scope Process -Force — this only affects the window you have open.

  5. 05

    Run it

    Type cd C:\ZTILITY then .\ztility.ps1 and press Enter. Watch the highlighted section headings as it works.

  6. 06

    Restart

    Restart Windows so every change takes effect. If something is wrong, run the undo script or roll back to the restore point.

The switches that need a second thought

9 options are marked Advanced. Each one removes or disables something Windows relies on.

OptionWhat it costs you
Reset Firewall RulesRestores Windows Firewall to its default rule set.
Disable Hyper-VVirtual machines and WSL2 may stop working after this.
Remove Microsoft StoreRemoves the Store entirely. You will not be able to install Store apps.
Remove EdgeFully uninstalls Microsoft Edge. Some Windows panels rely on it.
Disable BiometricsTurns off fingerprint and face sign-in.
Disable Windows Platform Binary TableBlocks firmware-injected executables at boot.
Disable BitLocker EncryptionDecrypts the system drive. Your data will no longer be encrypted.
Disable Core IsolationGains a few percent performance at a real security cost.
Disable Windows UpdatesStops all updates including security patches. Not recommended.
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