splits iTunes into separate applications but also removes support for Playlist XML files - many popular DJ applications may need to be upgraded.

does not support installing on and booting from FireWire storage.

does not support Apple's hardware RAID and Apple's RAID Utility has been removed.

VPN connections via L2TP over IPSec now require 'HMAC-SHA-256' security at the third-party server end - make sure your VPN server is compatible!.

has a dedicated system volume - third party backup/cloning/disk repair software should be checked and updated/upgraded if necessary to work with this version of macOS.

If you wish to install macOS Monterey on the same storage device as older versions of macOS (such as a dual boot configuration) you must create a new 'container' (partition) for macOS Monterey and install it to that separate container/partition!

has a Signed System Volume - this means if you install it in the same APFS 'container' as another version of macOS you will have issues booting.

no longer trusts TLS certificates signed with the SHA-1 hash algorithm.

does not support legacy System/Kernel Extensions (KEXTs).

macOS 12 removes PHP - use Homebrew to install it or install via a third party software stack such as MAMP/MAMP PRO.

macOS 12.3 and later removes Python 2.x - use Python 3 instead (once macOS 12.3 is installed, run the stub /usr/bin/python3 in Terminal which will prompt you to install the latest Xcode developer tools that includes Python 3.x).Microsoft has in-depth information on their new 'Files On-Demand' feature. macOS 12.3 and later removes support for kernel extensions used by Dropbox and Microsoft OneDrive - if you use these applications update to the latest versions before installing Monterey.Monterey's Notes have the option of tagging and mentions - if you use either of these new features, Notes including them will be hidden on devices not running iOS 14.5 or later | macOS 11.3 or later.Monterey has an OS version of 12.x instead of 10.x or 11.x - this could affect some older software installers and scripts if they check the OS version in the wrong way.

Older Mail application 'plug-ins' are now deprecated and will stop functioning in a future version of macOS.

MacOS 12 Monterey Frequently Asked Questions FAQ Article ID = 260Īrticle Title = macOS 12 Monterey Frequently Asked Questions FAQĪrticle Last Updated = 20th December 2022įrequently Asked Questions about macOS 12 Monterey WARNINGS!

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