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Mac OS sierra app is damaged

Hi

I have tried multiple times to download the OS but every time i get message that

This copy of the Install macOS Sierra.app application is damaged, and can't be used to install macOS.

I have validated that i have enough RAM and diskspace when download happens. More than 3 GB RAM and 35 GB disk space is available.

MacBook Pro (Retina, 13-inch, Mid 2014) 2.6 GHz Intel Core i5

Thanks

Vishal

35GB's of available disk space is cutting it too close. Free up storage to at least 50GB's.

macOS - How to Upgrade - Apple

I have now 56 GB space. let me try.

same error again - This copy of the Install macOS Sierra.app application is damaged, and can't be used to install macOS.

I have the same issue, but also the App Store thinks that Sierra has already been downloaded and won't let me try again. It doesn't show on the "Purchases" list.

Verify you have your >System Preferences>Date&Time> Set to Automatic

and try again.  (If it is already checked then try unchecking.)

delete all previous downloaded copies, and down load again.

Hi

Tried with 50 GB free space but same issue.

Thanks

Vishal

Step 1. Go to your applications folder.

Step 2. Find the installer for macOS Sierra.

Step 3. Right click on the installer and click "Show Package Contents".

Step 4. Click on folder named "Contents".

Step 5. Click on the folder named "SharedSupport".

Step 6. Delete the file named "InstallInfo.plist".

Step 7. Enter your administer password to confirm.

Step 8. Now open the installer.

Thank you.

O... and... I miss Leopard, I miss Steve Jobs era. Apple has become a rotten marketing monster.

Thank you Thubredhal! I've been searching everywhere for this info.

Your welcome!

Now... installer OK, your tip works. But after that macos FAILED TO DOWNLOAD. This is sick. Very sick.

Yeah, spoke too soon. Same problem here.

To update my post, I was able to re-download the update after deleting the damaged installer. I haven't installed it yet, but it appears undamaged.

"FAILED TO DOWNLOAD"?

最後更新：2017-09-10 13:18:41

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