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MacOS High Sierra 10.13.6 need to update to update Microsoft 365

I am trying to install Microsoft 365 on my iMac desktop it is saying I need to have at least a 10.14 or higher. it is a MacOS High Sierra version 10.13.6. but I can not update it

iMac 21.5″, macOS 10.13

Posted on Nov 7, 2021 1:40 AM

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Question marked as Top-ranking reply

Posted on Nov 7, 2021 1:58 AM

According to Apple - This computer Qualifies to upGrade all the way to the newest Monterey macOS version 12


Do suggest reading all point lists above and for a deeper Tips Monterey Upgrade also listed above. Do all this Before attempting the upGrade to avoid possible issues afterwards.

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Question marked as Top-ranking reply

Nov 7, 2021 1:58 AM in response to teressa195

According to Apple - This computer Qualifies to upGrade all the way to the newest Monterey macOS version 12


Do suggest reading all point lists above and for a deeper Tips Monterey Upgrade also listed above. Do all this Before attempting the upGrade to avoid possible issues afterwards.

Nov 7, 2021 1:42 AM in response to teressa195

The Age of this computer will Govern what newer version of macOS it will Qualify to install. Use About this Mac from the Apple Icon on Desktop - the required Information will be there.


With the above information in-hand - follow this How to get old versions of macOS and verify what version this computer Qualifies to install.  For Best results use Safari to commence the download as Others may not work.


Tips Big Sir Upgrade - verify if this computer Qualifies


Tips Monterey Upgrade - verify if this computer Qualifies


Make Time Machine Backup  is very useful and can be used to Revert to Previous Working macOS


Notation - Mojave is the Last version to support 32 bit applications / extensions and Drivers. Catalina, Big Sur & Monterey supports only 64 bit and there is no workaround.


Suggest using Go64 to find 32 bit application before attempting the upGrade. Some or many of the Application already installed may required update or upGrades to 64 Bit Versions.


Are there any AntiVirus, Disk Cleaner, Optimizers, Un-installers, etc installed which should be removed as per Developers Instructions. They are useless, unneeded, cause havoc and interfere with the normal operation of the OS and may even Corrupt the OS requiring a Reinstallation

MacOS High Sierra 10.13.6 need to update to update Microsoft 365

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