macbook Air unapproved caller security agent may only be invoked by Apple software
macbook Air unapproved caller security agent may only be invoked by Apple software
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First please try this simple step: How to use safe mode on your Mac - Apple Support.
Restart your Mac in that mode, or attempt to restart it in that mode. If it starts and runs ok, then restart it normally (not "Safe Mode").
If the problem continues please write back.