/Applications/Install macOS Monterey.app does not appear to be a valid OS installer application.

MacBook Pro 15″, macOS 12.7

Posted on May 19, 2024 3:31 AM

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This copy of the Install macOS Monterey application is damaged, and can‘t be used to install macOS. I currently run a Mac Book Pro 15` from late 2016 with BigSur and every time I try to upgrade it to Monterey it gives me the following message: This copy of the Install macOS Monterey application is damaged, and can‘t be used to install macOS. I've got no antivirus, switched off the firewall and no malware. What gives? I've also redownloaded the file many times with the same results.
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1 reply

kaz-k

Level 9

51,870 points

May 19, 2024 3:44 AM in response to Rabzoo

Hi,

Delete it and download the installer from Mac App Store.

How to download and install macOS – Apple Support (AU)

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/Applications/Install macOS Monterey.app does not appear to be a valid OS installer application.

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