Sierra 10.12.6 upgrade - Apple Community

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If your Mac is compatible with a newer version of macOS, see:

How to download and install macOS - Apple Support

If you upgrade to Catalina or later,
- 32-bit applications will stop working
- iTunes will go away, replaced by separate applications: What happened to iTunes? - Apple Support
- You will be able to run Chrome ( which requires Catalina or later )
- You will be able to run the current version of Firefox
If you can't upgrade as far as Catalina, Firefox 115 ESR might let you access some sites that have issues with older versions of Safari.

The Netflix site says that "You can use a Web browser to watch Netflix TV shows and movies on … Mac computers running OS X El Capitan version 10.11.6 or later" – so I don't know what incompatibility with Netflix you are running into now.

https://help.netflix.com/en/node/23742
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The macOS version you can upgrade to depends on the year your Mac was released.

Click the Apple menu () at the top of your screen and choose About This Mac .

Check the compatibility of your Mac hardware with newer versions of macOS software:

➡️ macOS 10.13 High Sierra is compatible with the Macs listed here

➡️ macOS 10.14 Mojave is compatible with the Macs listed here

➡️ macOS 10.15 Catalina is compatible with the Macs listed here

➡️ macOS 11 Big Sur is compatible with the Macs listed here

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