Security Update Causes Apps To Be Damaged

I installed the Security Update on my iMac at work and my MacBook Pro this morning (September 2, 2016). The MacBook Pro has had no problems, but the iMac is in trouble. It rebooted after installing the update and drops to the desktop, but it will not open applications, saying they are damaged or incomplete. The Finder is VERY slow, taking several seconds to open windows. Is there any way I can rebuild something to get my functionality back?

Posted on Sep 2, 2016 6:44 AM

48 replies

mmca

Level 1

8 points

May 20, 2017 10:26 AM in response to michael gardner

Same here.

mmca

Level 1

8 points

May 20, 2017 10:28 AM in response to michael gardner

Same here. Still struggling to find a solution.

Level 7

24,239 points

May 20, 2017 10:41 AM in response to mmca

Can't confirm.

This thread has been closed by the system or the community team. You may vote for any posts you find helpful, or search the Community for additional answers.

Security Update Causes Apps To Be Damaged

Welcome to Apple Support Community

A forum where Apple customers help each other with their products. Get started with your Apple Account.

Learn more Sign up