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The macOS OS X El Capitan 10.11 dmg file cannot be opened.

https://support.apple.com/en-us/HT211683

There may be something wrong with the file.

Mac Pro, OS X 10.11

Posted on Aug 2, 2021 8:20 PM

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Question marked as Apple recommended

Check in download folder and if the DMG is there, drag and drop to Trash and empty Trash, Download again.

Posted on Aug 3, 2021 1:49 AM

2 replies

The macOS OS X El Capitan 10.11 dmg file cannot be opened.

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