Grumpy's Movies — Xbox sideload (Developer Mode)
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IMPORTANT — Xbox Series X|S uses the SAME package as Xbox One
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Upload GrumpysMovies-Xbox.msixbundle (x86 + x64). The console installs the x64
package inside the bundle.

Do NOT upload an ARM64-only .msixbundle. Device Portal will fail with:

  "does not have an appropriate application package for x64 architecture" (0x80073cf1)

This applies to Xbox One, Series X, and Series S in Developer Mode.

Files in this download folder:
  GrumpysMovies-Xbox.msixbundle   Main app package (x86 + x64 — use this)
  GrumpysMovies-Xbox.cer          Publisher certificate (install once)
  Add-AppDevPackage.ps1           Windows install helper (optional)
  Install.ps1                     Shortcut installer script (optional)

Method A — Xbox Device Portal (recommended)
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1. Enable Developer Mode on your Xbox and note the console IP address.
2. On a PC, open https://YOUR_XBOX_IP/ in a browser and sign in.
3. Go to "Manage Xbox" → "Install package".
4. Upload GrumpysMovies-Xbox.msixbundle.
5. Launch from My games & apps → Apps.

Method B — Install on Windows first (same package)
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1. Right-click Install.ps1 → Run with PowerShell (in this folder).
   Or run Add-AppDevPackage.ps1 and point it at the .msixbundle.
2. Trust the publisher certificate when prompted (GrumpysMovies-Xbox.cer).

Rebuild locally:  build-xbox.cmd  (in UWP\Grumpy Movie Browser\)
