Disconnect your Mac from the internet (unplug Ethernet and turn off Wi-Fi).

Once completed, navigate to your /Applications directory. You will see a newly generated app file titled . Method 3: Alternative Archive Sources

If you're determined to install OS X Yosemite 10.10.5 in 2026, here's my advice:

Type date 0815120015 (which sets the date to August 15, 12:00 PM, 2015) and press . Quit Terminal and proceed with the installation. Slow Download Speeds or Interrupted Downloads

OS X Yosemite 10.10.5 was a monumental update for Apple. It completely overhauled the user interface with flat, translucent design elements that mirrored iOS 7 and 8. It also introduced Continuity and Handoff features, forever bridging the gap between iPhones and Macs.