“Unapproved Caller SecurityAgent may only be invoked by Apple Software”
I have this problem since two months (MBP, late 2008). I have tried every possible solution suggested here and on other sites. None has helped so far. Here is the list of what I have tried so far:
1) Disk repair/Repair permission
- From recovery partition
- From a bootable USB drive
2) Single user mode experience:
- /sbin/fsck –fy
- /sbin/mount -uw /
- rm -Rf /var/folders/*
2) Resetting PRAM/NVRAM, SMC
3) Safe boot4) Changing hard drive with a new one
5) Changing RAM with new one
6) Changing hard drive cable with new onew (from ifixit)
7) Apple Hardware Tests (basic and advanced test showed no problem)
8) The problem persisted on all of the following OS X versions:
- OS X Mountain Lion (clean install)
- OS X Mavericks (clean install)
- OS X Yosemite (clean install)
I was waiting for Yosemite and hopping that it will end my suffering. No, it did not. The issue remained the same with OS X Yosemite as well.
Practically, I cannot do anything with my MBP because of freezing, apps crashing, stack at startup, nonresponding loginwindow, safari problems, app store problems, downloading problems, unexpected error messages, invalid certificate on every website (even on apple store) etc. It usually works for 5-10 minutes after login and then the only option is a “hard shutdown”.
The only solution that has worked for me so far is to switch to a windows-based PC! However, I do not know how to use windows since I am a Mac user from the beginning of time!
I am stuck on this problem; any help will be greatly appreciated.
Thank you!