MsiZapEx is a command line utility and .NET assembly that enumerates Windows Installer products and WiX bundles and optionally deletes all their Windows Installer and WiX entries from the registry

• Note: The utility does not delete files or any other of the products' or bundles' contents. Rather, it deletes all indications of the installation by Windows Installer and WiX.
• Note: This utility is intended for use by Windows Installer and WiX bundle developers to recover from un-uninstallable packages. End users are encouraged not to use this tool.

• --upgrade-code UUID: List all Windows Installer products for the given UpgradeCode
• --product-code UUID: Detect Windows Installer product for the given ProductCode
• --component-code UUID: Detect Windows Installer products for the given ComponentCode
• --bundle-upgrade-code UUID: List all WiX bundles for the given bundle UpgradeCode
• --bundle-product-code UUID: Detect WiX bundle for the given bundle Id (AKA ProductCode)
• --detect-orphan-products: List all products that can't be normally uninstalled due to missing registration data
• --delete: Delete all WiX and Windows Installer entries for the provided UUID. Note that if multiple bundles or products are detected for a given UpgradeCode then you must delete each ProductCode separately
• --delete-all-related: When used with --upgrade-code or --bundle-upgrade-code, deletes Windows Installer and WiX entries for all related products. When used with --detect-orphan-products, deletes registration for all orphan products
• --dry-run: May be specified with --delete only. Print all WiX and Windows Installer entries for the provided UUID that would be deleted
• --obfuscated: For a Windows Installer ProductCode or UpgradeCode or ComponentCode, the UUID is provided in its obfuscated form
• --verbose: Print each registry modification

• Enumerate and delete user-level WiX bundles
• Create .reg file to undo changes