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You do not need to buy a brand-new Mac or upgrade to a buggy, unsupported OS version patcher just to make music. By utilizing the App Store’s legacy download feature, you can safely install a fully functional, official version of GarageBand on macOS Catalina 10.15.7 for free.
If you’re trying to install GarageBand on Catalina and getting an error that "macOS version 11 or later is required," follow these steps to get the compatible version: Option 1: If You Have "Purchased" It Before
Older versions of GarageBand sometimes struggle to download the extended instrument packs from Apple's servers. If your download stalls:
4GB minimum (8GB highly recommended for multi-track editing).
If you download an older version and get this error, try the following terminal command (found in Applications > Utilities): Open Terminal and type: xattr -cr /Applications/GarageBand.app (Note: Only do this for apps you trust from the App Store.)
Apple ensures that even if you are not on the latest OS, you can still download the last compatible version. Do pay for third-party "downloaders"—GarageBand is free from Apple.
Here is your step-by-step guide to downloading GarageBand for macOS Catalina 10.15.7.
Ensure your Mac does not go to sleep during this background download. If you need help getting this running, tell me: Have you GarageBand on your Apple ID?
Why the App Store Blocks the GarageBand Download on Catalina
Do you see listed in your App Store purchase history? What error message pops up when you try to click download?
Finding a for the installer package?
Return to your macOS Catalina Mac, open the App Store, go to your history, and follow the standard download steps outlined above. Troubleshooting and System Optimization
No. macOS Catalina reached end-of-life in November 2022. Version 10.4.6 is the final version that runs on 10.15.7.