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README.md

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 # simpliplay-xbox
 UWP app for Xbox, built on a Windows VM. This version does not properly support HLS and MPEG-DASH as of now, and is mostly stale other than necessary updates that prevent the app from breaking.
+
+## How to sign the app (required or otherwise it won't install)
+*If you don't want to sign it, you can use an unpacked build*.
+### 1. Create a Self-Signed Certificate
+
+Open **PowerShell as Administrator** and run:
+
+```powershell
+$cert = New-SelfSignedCertificate -Type Custom -Subject "CN=TestMSIXCert" -KeyUsage DigitalSignature -FriendlyName "Test MSIX Cert" -CertStoreLocation "Cert:\CurrentUser\My" -KeyAlgorithm RSA -KeyLength 2048 -HashAlgorithm SHA256
+```
+
+This creates a new certificate in your CurrentUser personal certificate store.
+
+### 2. Export the Public Certificate (.cer)
+Run this in PowerShell to export the public certificate to your Desktop:
+
+```powershell
+Export-Certificate -Cert $cert -FilePath "$env:USERPROFILE\Desktop\TestMSIXCert.cer"
+```
+You will use this .cer file to install/trust the certificate on the test device.
+
+### 3. Export the Private Key Certificate (.pfx) for Signing
+Open `certmgr.msc` (Certificates Manager).
+
+Navigate to Personal > Certificates.
+
+Find Test MSIX Cert (or the name you chose).
+
+Right-click the certificate → All Tasks → Export.
+
+Choose Yes, export the private key.
+
+Select .pfx format.
+
+Set a password when prompted.
+
+Save the .pfx file somewhere safe (e.g., C:\path\to\TestMSIXCert.pfx).
+
+### 4. Sign Your MSIX Package Using signtool
+Make sure you have SignTool installed (comes with Windows SDK). Then run this in PowerShell or Command Prompt:
+
+```powershell
+signtool sign /fd SHA256 /f "C:\path\to\TestMSIXCert.pfx" /p "yourPFXpassword" /v "C:\path\to\your.msix"
+```
+Replace "yourPFXpassword" and paths with your actual values.
+
+### 5. Install the Certificate on Your Test Device
+- On Xbox (Developer Mode):
+
+Use the Device Portal to upload and install the .cer file.
+
+- On Windows:
+
+Double-click the exported .cer file.
+
+Click Install Certificate.
+
+Choose Local Machine or Current User (depending on your use case).
+
+Install to Trusted Root Certification Authorities.
+
+### 6. Test Installing the Signed MSIX Package
+Now that the MSIX package is signed and the certificate trusted on the device, you should be able to install and run your app without signature errors.
+
+Additional Notes
+This method is for testing and development only.