After I check system log, found that "relaunch issue" is caused by UEM/MDM. => The 'mdmclient' reinstalls my application, scripts will kill the running program. <<MDM reinstall>> 15:00:18.512454 mdmclient Processing install phase 1 for… <<Relaunch App>> 15:00:26.596707 MobileIron Authenticate void checkArguments(NSArray<NSString *> *__strong) <<Relaunch Daemon>> 15:00:26.626379 MiDaemon int main(int, const char **) [DAEMON] main (without UI) ◻️◻️◻️◻️◻️◻️◻️◻️◻️ Another issue - 「App started by the system cannot find the Certificate in the Keychain」 I still don’t know why, but found a solution. Just use 'SecKeychainOpen' to open the user keychain file (~/Library/Keychains/login.keychain-db), and it can be used normally.