Hey there! Make sure of the following: Your app and the extension targets have the same minimum deployment target version Both targets contain necessary entitlements (depending on your NE type) <key>com.apple.developer.networking.networkextension</key> <array> <string>packet-tunnel-provider</string> </array> Your network extension target bundle id just extends the main app bundle id Main app: com.your.main.app Extension: com.your.main.app.extension Your main apps target contains YourNETarget.appex in Framework, Libraries, and Embeded Content section