Problem Downloading/Installing Security Update 2016-003

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Problem Downloading/Installing Security Update 2016-003

I've have attempted three times to install Security Update 2016-003 and have each time received the following message:

Security Update 2016-003 could not be verified. It may have been corrupted or tampered with during downloading. Click Update to download and check the update again. (After your computer restarts, go to the Updates page of the App Store for more information.)

Had not problem installing the iTunes and Safari updates.

OS X Yosemite (10.10.5)

Posted on May 16, 2016 3:17 PM

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Answer 1

May 16, 2016 3:20 PM in response to micpoc

Did you, "Check Update to download and check update again." as it mentions?

Did you restart your Mac then try again.

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Answer 2

micpoc Author

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May 16, 2016 3:21 PM in response to Carolyn Samit

Yes.

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Answer 3

May 16, 2016 3:23 PM in response to micpoc

Ok...

Reset the NVRAM.

Instructions here > https://support.apple.com/en-us/HT204063

Then try again.

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Answer 4

micpoc Author

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May 16, 2016 3:25 PM in response to Carolyn Samit

OK, I will attempt that now.

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Answer 5

May 16, 2016 3:28 PM in response to micpoc

Keep us posted 🙂

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Answer 6

micpoc Author

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May 16, 2016 4:00 PM in response to Carolyn Samit

Well, that did not seem to work. After resetting the NVRAM, I went to the App Store and tried again; after clicking the restart now option, it went to a darkened screen with no progress bar showing installation. I left it there for about ten minutes, then shut down the computer and restarted. The App Store is still showing that the update is not installed. In addition, for some reason, I am now unable to open my Opera browser either.

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Answer 7

micpoc Author

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May 16, 2016 4:20 PM in response to micpoc

Any insight?? I'm kind of stuck here...

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Answer 8

May 16, 2016 4:37 PM in response to micpoc

Ok..

You aren't trying to download the security update for v10.9 Mavericks are you? >> https://support.apple.com/kb/DL1878?locale=en_US

If the update is for 10.10.5 Yosemite, as your profile suggests, restore OS X. You can restore from a Time Machine backup if necessary.

Startup your Mac while holding down the Command + R keys.

From there you can restore OS X using OS X Recovery.

Then try the security update.

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Answer 9

micpoc Author

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May 16, 2016 4:37 PM in response to Carolyn Samit

I shouldn't be trying to install a Mavericks update, as I am not RUNNING Mavericks; I'm running Yosemite, and 2016-003 shows up in my App Store as a download. If it's only for Mavericks, then why is the App Store telling me to install it?!?

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Answer 10

May 16, 2016 4:41 PM in response to micpoc

It's only for Mavericks users.

Only install updates for the OS X installed on your Mac.

I have a Mac running v10.11 El Capitan. The same Mavericks update is showing in the App Store for me.

That's why you are having problems ...

Restart your Mac. See if it boots as it should.

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Answer 11

micpoc Author

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May 16, 2016 4:44 PM in response to Carolyn Samit

Well, then the App Store shouldn't be telling it if it is only for Mavericks!

The App Store says:

Security Update 2016-003 10.10.5

Security Update 2016-003 is recommended for all users and improves the security of OS X.

It provides this link: Apple security updates - Apple Support

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Answer 12

May 16, 2016 4:47 PM in response to micpoc

In the future you can have security updates installed automatically.

Open System Preferences > App Store then select: Install system data files and security updates

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Answer 13

micpoc Author

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May 16, 2016 4:56 PM in response to Carolyn Samit

Well, considering the potential hours this is going to cost me right now, I am not so sure I want to enable anything automatically. Right now, I have an update listed in both the App Store and the Apple menu that I am still uncertain I am even supposed to install, AND I cannot open the browser that I've been using for a decade. In the past, whenever I've restored from a Time Machine backup, it's never seemed very stable. I'll try it in a little while, but this should not have been anywhere near the headache that it has been. Fortunately, I did do a Time Machine backup just prior to attempting the update.

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Answer 14

micpoc Author

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May 16, 2016 10:41 PM in response to micpoc

I restored through Time Machine to the installation I had prior to the App Store update and, as I predicted, I have an incredibly buggy install now: only Safari and Firefox browsers will open (i.e., Opera, Chrome, AND Vivaldi hang and have to be forced to quit), my external monitor is NOT being recognized, and I STILL have both the App Store AND the Apple Menu telling me that I have an install to perform.

Is there ANYTHING I can do to fix this problem, besides the hours and hours of work that a clean install of Yosemite will require? NOTHING in that App Store notification said anything about this update not being for users of Yosemite. It specifically says "Security Update 2016-003 10.10.5" which is the OS I am running, and now that update has completely screwed up my computer.

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Answer 15

May 17, 2016 3:55 PM in response to micpoc

Yup. OS10..10.5.

iMac Mid 2011.

I'm seeing the exact same issue with the 2016-003 security update. Makes no difference what you try, the update continues to report that it's uninstallable or corrupt.

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