I had the same issue, I was able to resolve it.
For my situation, these 4 things were my major obstacles:
- Obtain Android Support for the project:
In the Unreal Editor, File>Package Project>Android>Android (ASTC)
A folder select box will appear, then you will navigate to your project directory location on your storage media, then navigate within that folder to Build>Android folder and select the ‘Android’ folder.
It will take a little bit to conduct the Packaging and Compile the shaders. - Make sure the checkbox for Android is checked in the Supported Platforms for the project. In the Unreal Editor, Edit>Project Settings>Supported Platforms…
- Limit the Android SDK to version 25 in both Android Studio and in the Project Settings in Unreal.
In Android Studio navigate to the SDK Manager via Welcome Form>Configure>SDK Manager
Make sure Android 7.1.1 (Nougat) API Level 25 is the only SDK Package installed (not sure this necessary as I did not test with other/additional variants beyond a successful Launch).
In the Unreal Editor, Edit>Project Settings>Platforms>APK Packaging
- Minimum and Target SDK both set to 25.
- Ensure the Advanced APK Packaging settings are correct
In the Unreal Editor, Edit>Project Settings>Platforms>Advanced APK Packaging
- Click the + next to ‘Package for Oculus Mobile devices’; Set array index 0 to ‘Oculus Quest’
- ‘Remove Oculus Signature Files from Distribution APK’ is checked
Hope this helps someone… 