Q: OSX El Capitan - " This copy of the install OSX El Capitan application can't be verified. It may have been corrupted or tampered w ... OSX El Capitan - " This copy of the install OSX El Capitan application can't be verified. It may have been corrupted or tampered with during downloading" more
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Helpful answers
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Dec 10, 2015 7:47 AM in response to LovelyMacby Brett L,Hi LovelyMac,
If I understand your question, you downloaded OS X El Capitan, but are receiving an error message when you try to install the application. Did you download the application from the Mac App Store? If so, check to make file downloaded completely.
Resume interrupted iTunes Store downloads
https://support.apple.com/en-us/HT204312Restart a download on a Mac or PC
- Open iTunes.
- Mac: From the menu bar at the top of your computer screen, choose Store > Check for Available Downloads.
If prompted, enter your Apple ID and password.
If your system time is not correct, that may interfere with the installation. Here's how to check it.
OS X Yosemite: Set the date and time on your Mac
https://support.apple.com/kb/PH18804?locale=en_USChoose Apple menu > System Preferences, then click Date & Time.
Click Date & Time, then select to set the date and time automatically.
Automatically: Select “Set date and time automatically,” then choose the network time server for your region.
Click Time Zone, then select to set the time zone automatically.
Automatically: Select “Set time zone automatically using current location.”
To set the date and time format, choose Apple menu > System Preferences, then click Language & Region.
LovelyMac, once you have determined that the download was complete and the time on your Mac is correct, restart your Mac to see if the installation will resume. The El Capitan Installer file will be in your Applications folder. If necessary, you can drag that file to the Trash, and then download it again from the Mac App Store. If you initially downloaded the file over Wi-Fi, try connecting an Ethernet cable this time and see if the wired connection to the internet helps with the speed of the download the second time around.
Hope that helps ...
