Thanks for your answer Matt, we appreciate the questions. They have helped to clarify some points. It is a network app extension on MacOS. Revising the code we noticed that we had left a misconfiguration from previous tests when establishing the network extension configuration. We had set: filterPackets = true filterSockets = false But now we need: filterPackets = false filterSockets = true After changing this, the extension was successfully loaded.

Hello there. Ok, took me a long time to figure out all of the signing, provisioning, entitlements, and notarization stuff, but when I finally successfully signed it with a developer ID and notarized it, it started working on the test machine. So maybe the error messages were misleading me and the true issue might have been less about the extension being built properly within the bundle, and more about permissions and entitlements. We are facing the same problem right now. Could you please give more details about what you changed regarding the signing, provisioning profiles, entitlements and notarization to make it work? We have revised the process and tested different alternatives unsuccessfully. Thanks a lot in advance