sierra The installer payload failed signature check

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Level 1

12 points

sierra The installer payload failed signature check

I'm trying to install Sierra from the Apple Store and I keep getting this message: The installer payload failed signature check.

I checked my date and even executed this (ntpdate -u time.apple.com) and still have the same problem.

Any ideas?

iMac, Mac OS X (10.0.x)

Posted on Oct 14, 2016 11:51 AM

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Answer 1

einreb

Level 1

12 points

Sep 14, 2017 10:47 AM in response to JovonaP.

Thanks. That did it!

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Answer 2

sterling r

Community Specialist

Oct 15, 2016 4:00 PM in response to SparkyOn3

Hello SparkyOn3,

Thank you for using Apple Support Communities. It's my understanding you've been receiving an error message when trying to install Sierra. I know it's important to upgrade to the latest software. I'm happy to help.

You've done a great job so far. Next, I recommend starting your Mac in safe mode and try to install. Starting in safe mode will allow your Mac to run certain check, delete cache, and prevent startup logins from launching. Use the steps below to start in safe mode:

Start or restart your Mac.

Immediately after you hear the startup sound, press and hold the Shift key.

Release the Shift key when you see the Apple logo appear on the screen.

After the Apple logo appears, it might take longer than usual to reach the login screen or your desktop. This is because your Mac performs a directory check of your startup disk as part of safe mode.

To leave safe mode, restart your computer without pressing any keys during startup.

Try safe mode if your Mac doesn't finish starting up

If the issue persists in safe mode, it's possible a user setting or file is the cause. Try installing in a new user account. Use the link below for further assistance:
How to test an issue in another user account on your Mac

Have a great day!

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Answer 3

SparkyOn3 Author

Level 1

12 points

Oct 15, 2016 4:02 PM in response to sterling r

Thanks for the help, but none of your suggestions worked.

I tried booting up in safe mode, then tried the upgrade in my user account, same error

Then I created a new account still in safe mode, then tried the upgrade in my user account, same error

Any other suggestions?

Thanks

Mike

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Answer 4

JovonaP.

Community Specialist

Oct 19, 2016 6:07 PM in response to SparkyOn3

Thank you for trying the suggested steps and following up. Try deleting the macOS Sierra installer in Finder > Applications install macOS Sierra. Then, restart the Mac and try installing Sierra from the Mac App Store again.

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Answer 5

SparkyOn3 Author

Level 1

12 points

Oct 19, 2016 6:08 PM in response to JovonaP.

That did the trick!

THanks!!!

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