{"id":"troubleshooting.update-failed-notarization-check","url":"/faq/troubleshooting/update-failed-notarization-check","category":{"id":"troubleshooting","title":"Troubleshooting & messages"},"subcategory":{"id":"update-messages","title":"Updates and installing"},"question":"What does \"Apple notarization check failed on the downloaded update\" mean?","alt_questions":["apple notarization check failed on the downloaded file","gatekeeper wouldn't accept this dmg","update failed notarization","open download in browser storage studio update"],"short_answer":"The downloaded update didn't pass Apple's genuineness check (usually incomplete or damaged), so it wasn't installed. Retry, or use Open download in browser for a fresh copy.","answer_markdown":"Before installing an update, Storage Studio confirms with macOS that the download is genuine and approved by Apple. This download didn't pass — usually because it was incomplete or damaged on the way. It was not installed.\n\nTry the update again. If it fails again, use **Open download in browser** to download a fresh copy from storagestudio.us and install it by dragging it to Applications.","answer_html":"

Before installing an update, Storage Studio confirms with macOS that the download is genuine and approved by Apple. This download didn't pass — usually because it was incomplete or damaged on the way. It was not installed.

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Try the update again. If it fails again, use Open download in browser to download a fresh copy from storagestudio.us and install it by dragging it to Applications.

","answer_text":"Before installing an update, Storage Studio confirms with macOS that the download is genuine and approved by Apple. This download didn't pass — usually because it was incomplete or damaged on the way. It was not installed.\n\nTry the update again. If it fails again, use Open download in browser to download a fresh copy from storagestudio.us and install it by dragging it to Applications.","tags":["update","notarization","gatekeeper"],"related":[{"id":"troubleshooting.update-failed-verification-discarded","question":"What does \"The downloaded update failed verification and was discarded\" mean?","url":"/faq/troubleshooting/update-failed-verification-discarded"},{"id":"troubleshooting.update-couldnt-be-installed","question":"What does \"Update couldn't be installed\" mean in notifications?","url":"/faq/troubleshooting/update-couldnt-be-installed"}],"applies_to":"all","last_reviewed":"2026-10-01","title":"What does \"Apple notarization check failed on the downloaded update\" mean? — Storage Studio FAQ","description":"The downloaded update didn't pass Apple's genuineness check (usually incomplete or damaged), so it wasn't installed. Retry, or use Open download in browser for a fresh copy.","crumbs":[{"name":"Home","path":"/"},{"name":"FAQ","path":"/faq/"},{"name":"Troubleshooting & messages","path":"/faq/troubleshooting/"},{"name":"What does \"Apple notarization check failed on the downloaded update\" mean?","path":"/faq/troubleshooting/update-failed-notarization-check"}],"jsonld":{"@context":"https://schema.org","@type":"FAQPage","url":"https://storagestudio.us/faq/troubleshooting/update-failed-notarization-check","inLanguage":"en","dateModified":"2026-10-01","mainEntity":[{"@type":"Question","name":"What does \"Apple notarization check failed on the downloaded update\" mean?","alternateName":["apple notarization check failed on the downloaded file","gatekeeper wouldn't accept this dmg","update failed notarization","open download in browser storage studio update"],"acceptedAnswer":{"@type":"Answer","text":"Before installing an update, Storage Studio confirms with macOS that the download is genuine and approved by Apple. This download didn't pass — usually because it was incomplete or damaged on the way. It was not installed.\n\nTry the update again. If it fails again, use Open download in browser to download a fresh copy from storagestudio.us and install it by dragging it to Applications.","url":"https://storagestudio.us/faq/troubleshooting/update-failed-notarization-check"}}]},"fragment":"
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Troubleshooting & messages · Updates and installing

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What does "Apple notarization check failed on the downloaded update" mean?

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Short answer: The downloaded update didn't pass Apple's genuineness check (usually incomplete or damaged), so it wasn't installed. Retry, or use Open download in browser for a fresh copy.

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Before installing an update, Storage Studio confirms with macOS that the download is genuine and approved by Apple. This download didn't pass — usually because it was incomplete or damaged on the way. It was not installed.

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Try the update again. If it fails again, use Open download in browser to download a fresh copy from storagestudio.us and install it by dragging it to Applications.

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Last reviewed

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