![macos - This copy of the Install OS X El Capitan application can't be verified. It may have been corrupted or tampered with during downloading - Ask Different macos - This copy of the Install OS X El Capitan application can't be verified. It may have been corrupted or tampered with during downloading - Ask Different](https://i.stack.imgur.com/a6nYv.png)
macos - This copy of the Install OS X El Capitan application can't be verified. It may have been corrupted or tampered with during downloading - Ask Different
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mac appstore - How to download OS X El Capitan from the App Store even if never downloaded before macOS Sierra was released or purchased is grayed out - Ask Different
![macos - This copy of the Install OS X El Capitan application can't be verified. It may have been corrupted or tampered with during downloading - Ask Different macos - This copy of the Install OS X El Capitan application can't be verified. It may have been corrupted or tampered with during downloading - Ask Different](https://i.stack.imgur.com/E1BMF.png)