Checkup

Checkup is a read-only-first Windows health and troubleshooting tool.

It scans for useful evidence: system-drive space, temporary-file growth, network availability, startup inventory, activation status, and scan safety. It then explains what it found in plain language and calculates a transparent 0–100 health score.

Support bundles

Checkup 1.0 exports a self-contained ZIP for troubleshooting and handoff. Each bundle contains structured JSON, a standalone HTML report, a concise system summary, a privacy note, and a SHA-256 manifest. User-profile names and product-key-shaped values are redacted. Checkup does not include file contents or make system changes while generating a bundle.

Activation

Checkup includes a Fix activation action that opens Windows' official Activation settings. It does not bypass licensing, hide activation notices, or modify protected licensing components.

Principles

• Scan before changing anything
• Explain evidence and impact
• Preview repairs before applying them
• Keep changes reversible
• No account, telemetry, or cloud service required

Build and test

dotnet run --project tests/CheckupEngineTests.csproj
dotnet build Checkup.csproj -c Release
dotnet publish Checkup.csproj -c Release -r win-x64 --self-contained true -p:PublishSingleFile=true

Checkup is not affiliated with Microsoft or Windows.

Name change

Checkup replaces OpenFix. New builds use Checkup.exe and Checkup.csproj. Existing releases remain available under their original names.

Unattended support bundles

Version 1.2.0 can generate a private support ZIP without opening a window:

$p = Start-Process .\Checkup.exe -WindowStyle Hidden -ArgumentList '--scan --output "C:\Reports\checkup.zip"' -Wait -PassThru
$p.ExitCode

Use a new ZIP filename. Existing reports are never replaced by this command. Exit 0 means the report was written, 2 means invalid arguments or an existing output, and 1 means the operation failed. Findings inside the report determine health; a successful export does not mean the machine has no issues.

Temporary-file inventory now skips links and junctions, supports cancellation, and stops after 200,000 entries or 15 seconds of enumeration. Partial coverage creates an attention finding with measured-file and skipped-entry counts, so a lower-bound size is not mistaken for a complete scan. Filesystem calls already in progress can outlast the enumeration budget. Bundles remain local and should be reviewed before sharing.

Automatic setup

Windows setup packages install Checkup for your current account, bundle the .NET runtime, create a Start menu shortcut and register an uninstaller. A desktop shortcut is optional. No administrator password or manual file copying is required. Existing settings and saved data stay in their current locations. The portable ZIP remains available.

Download Checkup-v1.2.0-setup.exe from Releases and run it.

For unattended deployment:

Start-Process .\Checkup-v1.2.0-setup.exe -ArgumentList '/VERYSILENT /SUPPRESSMSGBOXES /NORESTART /SP-' -Wait -PassThru

Build from source with the open-source Inno Setup compiler installed:

pwsh -File scripts/Build-Setup.ps1 -Verify

The verification option installs into a temporary test folder, checks reinstall and launch, then uninstalls. It runs on the hosted Windows runner during CI. It does not remove existing user settings or backups.