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The Apple Support Community will permanently close on November 20, 2026. Starting today, the site will no longer accept new posts and is available in a read-only state.
You can continue to find trusted guidance and support on the official Apple Support site.
We want to thank the community members who have contributed their time and expertise to help others with their Apple products.
my 2019 iMac Retina produces the following message while trying to upgrade to mac OS Sonoma: This copy of the Install mac OS Sonoma application is damaged , and can't be used to install mac OS"
My iMac Retina is listed as supporting mac OS Sonoma. How do I work around the message I get when I try to upgrade?
[Re-Titled by Moderator]
iMac 21.5″, macOS 10.15
It sounds like your download was corrupted somehow. Navigate to the downloads folder, locate the update and move it to the Trash, then empty the Trash and re-try the update.
It sounds like your download was corrupted somehow. Navigate to the downloads folder, locate the update and move it to the Trash, then empty the Trash and re-try the update.
Thanks,
Apple support walked me through successfully basically following your suggestion.
Your welcome.
I am unable to upgrade my iMac to macOS Sonoma
