KillerBench help

KillerBench is a Windows diagnostic and repair workbench for technicians. It checks a computer first, explains what it found with the evidence behind each finding, and only changes Windows when you pick a specific fix and confirm it.

KillerBench is in development. There is no public download yet. These pages describe the current build.

What it does

• Runs read-only diagnostics across Windows Update, devices, storage, networking, printing, security, apps and profiles, then writes a readable report.
• Offers guarded repairs that run only when fresh evidence proves the exact problem, and verifies the result afterwards.
• Covers setup and hardening work such as BitLocker, privacy settings, decluttering Windows and onboarding a new computer.
• Runs diagnostics and report analysis locally without AI or a KillerBench account. Selected actions, such as downloads and recovery-key backup to Entra ID, can contact external services.
• Uses the active app theme for the console, reports, confirmations, and Open, Save, and Folder dialogs.

Where to start

• Download and setup
• About KillerBench

• Your first diagnosis walks through a full system scan.
• The workspace explains the sections, panels and shortcuts.
• How changes stay safe explains what KillerBench checks before and after any change.
• How-to guides walk through common jobs step by step.
• The Sections pages describe every tool, grouped the same way as the app.
• Command line lists every killerbench-cli command.
• Troubleshooting covers blocked actions, restarts and interrupted requests.

Developers who want to embed the diagnostics in their own tools can read the Engine developer guide.