How to Update the PFX Key for UWP Signing

This guide explains how to generate and update the PFX (Personal Information Exchange) certificate used to sign the PPSSPP UWP app.

Prerequisites

• Visual Studio installed with UWP development workload

• Access to the project solution file

Step 1: Open the Package Manifest

1. In Visual Studio, open the PPSSPP UWP solution

2. In Solution Explorer, navigate to the UWP project

3. Double-click on Package.appxmanifest or PackageGold.appxmanifest to open the manifest viewer

Step 2: Go to the Packaging Tab

1. Click on the Packaging tab in the manifest viewer

2. You'll see the current certificate information displayed here

Step 3: Choose a Certificate

1. Click the Choose Certificate... button

2. A dialog will appear with several options:

   • Create... - Create a new self-signed test certificate

   • Select from Store... - Choose an existing certificate from Windows Certificate Store

   • Select from File... - Browse for an existing .pfx file

Step 4a: Create a New Test Certificate

If creating a new self-signed certificate:

1. Click Create...

2. Enter a Publisher Common Name (e.g., CN=YourName)

3. Optionally set a password

4. Click OK

Step 4b: Select an Existing Certificate

If using an existing .pfx file:

1. Click Select from File...

2. Go to your .pfx file location

3. Enter the certificate password if prompted

4. Click OK