Windows XP

Please be patient when installing on XP, it can take a few minutes. It may also display this screen:

We can assure you that it is safe to install. This screen does not appear on Windows 7 and later, because those more advanced versions of Windows are able to verify the publisher (Patchworkz Software Ltd). To confirm PatchPerfectXP.msi is valid, click on it using the secondary mouse button (usually the right-hand-side button) to display the pop-up menu, and then click "Properties":

Ensure it has a "Digital Signatures" tab, and confirm the file has been signed by Patchworkz Software Ltd:

The signer should be "Patchworkz Software Ltd".