Solved the error of missed notification by calling RegisterService in the beginning of the 'Start' method, before source/queue/notification setup
@Drewbadour , seems now notification is delivered. But still have problems:
........... FIRST: Services are in the different processes. IOProviderClass = IOUserResources, IOUserServerName is $(PRODUCT_BUNDLE_IDENTIFIER) for both, IOUserServerOneProcess = 1 for both. IOMatchCategory equals IOUserClass for both.
............SECOND: When notification is delivered, OSDynamicCast fails to cast service to the type of my service. Probably the most important part
erreewrwe
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I'll be full of gratitude if you can share your test sample with 2 DEXTs with me (alkensox@g mail.com)...............For the casting, I've compared pointers to 'this' of the matched DEXT service and the pointer coming into matching notification. Seems they differ in some reason