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You can still download the installer directly from official Apple channels or third-party repositories: Official Installer (.dmg) : You can find the installer on the official Apple Support Download Page Combo Update : If you already have Yosemite installed, the OS X Yosemite 10.10.5 Combo Update
If you search the "Purchased" tab of the Mac App Store on an older Mac, you might see "OS X Yosemite." However, due to certificate expiration and Apple’s shift to later OS versions, that download often fails or is redirected to macOS Catalina. mac os x yosemite 10.10 5 download dmg
Use Apple’s discontinued but still alive softwareupdate terminal command in older macOS versions. However, for most users, the easiest method is to obtain a verified DMG from a reputable archive like the Internet Archive (archive.org), where user apple_legacy has uploaded a byte‑for‑byte copy of the original 10.10.5 combo update and full installer. You can still download the installer directly from
Avoid any website that asks you to install a "download manager" or enter your credit card details. Legitimate Yosemite DMG files are usually between 5.2 GB and 5.8 GB in size. Anything significantly smaller is suspicious. Avoid any website that asks you to install
Version is the final, most stable release of Yosemite. It includes security updates and bug fixes not present in earlier 10.10.x versions.