If you ever downloaded or purchased OS X Mavericks between 2013 and 2014 using your Apple ID, it is permanently tied to your account.
The Install OS X Mavericks.app file placed inside your Mac's folder. Step-by-Step Terminal Method (Recommended)
OS X 10.9 does not receive security updates. It is highly recommended not to use this system for sensitive tasks like online banking if it is connected to the internet [4]. mavericks os x 10.9.x dmg
Select the orange drive labeled and press Enter. Step 3: Format the Internal Drive (For Clean Installs Only)
to a time closer to 2013 (e.g., November 1, 2013) using Terminal before starting the install. 3. Check Your App Store Purchases If you ever downloaded or purchased OS X
If you download a DMG from a third‑party site, forum, or torrent, verify its MD5 (or SHA‑1) hash using the md5 or shasum command in the macOS Terminal. For example:
OS X Mavericks (10.9.x) marked a pivotal moment for Apple’s desktop operating system. Released in October 2013, it was the first version of OS X to be offered as a free upgrade — a decision that brought modern Mac features to millions of users without any price barrier. More than a decade later, Mavericks remains an important OS for owners of older Mac hardware, users of legacy software, and enthusiasts running virtual machines. It is highly recommended not to use this
Mavericks (v10.9) focused heavily on power efficiency and performance optimizations rather than radical visual changes. October 22, 2013. Latest Stable Version: 10.9.5.
You need to roll back your Mac's system clock to a year close to the operating system's release window (e.g., 2014 or 2015).