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When updating to Big Sur on my mac my Microsoft Office - Excel and Word will not open, message comes up that I need to pay a yearly subscription to use Excel and Word.

When updating to Big Sur on my mac my Microsoft Office - Excel and Word will not open, message comes up that I need to pay a yearly subscription to use Excel and Word.

MacBook Pro 15″, macOS 11.1

Posted on Jan 1, 2021 12:02 PM

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Question marked as Top-ranking reply

Posted on Jan 1, 2021 12:08 PM

I hope the following is helpful to you in addressing ‘problems’ with Microsoft Office after an OS upgrade.

·      First, Apple has regularly informed all of us for a couple of years that at some point our old 32 bit programs would no longer work with a future OS upgrade. That has finally occurred as we have been told it would. This appears to be the case with you.

·      Any other old 32 bit programs you have installed will also be affected. They also will no longer work and will have to be upgraded or replaced.

·      If you have Microsoft Office for Mac 2016 or later, it can be upgraded at no cost. If it is an earlier version, it cannot be upgraded.

·      If a person elects not to upgrade their Microsoft Office, there are several excellent alternatives. They are the free LibreOffice and OpenOffice apps. Additionally, your Apple OS provides three free programs which you may use as an alternative to Office, Pages, Numbers and Keynote.

·      Any of these apps can and will open your older Office documents, allowing you to work with them. With them you may also create new documents and save them as Word files, etc. when you need to share files with other people who only have Office installed.

·      You should be aware that using these other apps to open Word documents will likely result in formatting changes.

·      Using any of these programs does involve a learning curve as they work a bit differently, but all of them are fine programs and they are free.

·      If you decide to upgrade an older version of Office, you have options. You may elect to subscribe to any of the following:

    • Office 365 Home:  $99.99 per year or $9.99 monthly. This allows you to install Office in up to six devices. This service must be renewed yearly. You may try the service free for one month.
    • Office Personal:             $69.99 per year or $6.99 monthly. This is for installation on one device only. This service must be renewed yearly. You may try the service free for one month.
    • Office Home & Student:  $149.99 one-time purchase cost. This is a purchase for installation on one device only and is not renewed or have a monthly fee. It does not expire.
    • The second and third options include fewer additional apps such as having no Outlook app. Check the Microsoft site for details.

·       Finally, and this is important, when purchasing any of these Office upgrades, you need to register your purchase on the Microsoft web site, including which device or devices the apps are installed on. This can be changed later if a device is replaced. You must do this registration or you can have problems.

In summary, Apple has warned us of the coming change to 64 bit operations only. It has occurred. Now, it is up to us to decide how to proceed. I hope this information is helpful to you.


2 replies
Question marked as Top-ranking reply

Jan 1, 2021 12:08 PM in response to redrock18

I hope the following is helpful to you in addressing ‘problems’ with Microsoft Office after an OS upgrade.

·      First, Apple has regularly informed all of us for a couple of years that at some point our old 32 bit programs would no longer work with a future OS upgrade. That has finally occurred as we have been told it would. This appears to be the case with you.

·      Any other old 32 bit programs you have installed will also be affected. They also will no longer work and will have to be upgraded or replaced.

·      If you have Microsoft Office for Mac 2016 or later, it can be upgraded at no cost. If it is an earlier version, it cannot be upgraded.

·      If a person elects not to upgrade their Microsoft Office, there are several excellent alternatives. They are the free LibreOffice and OpenOffice apps. Additionally, your Apple OS provides three free programs which you may use as an alternative to Office, Pages, Numbers and Keynote.

·      Any of these apps can and will open your older Office documents, allowing you to work with them. With them you may also create new documents and save them as Word files, etc. when you need to share files with other people who only have Office installed.

·      You should be aware that using these other apps to open Word documents will likely result in formatting changes.

·      Using any of these programs does involve a learning curve as they work a bit differently, but all of them are fine programs and they are free.

·      If you decide to upgrade an older version of Office, you have options. You may elect to subscribe to any of the following:

    • Office 365 Home:  $99.99 per year or $9.99 monthly. This allows you to install Office in up to six devices. This service must be renewed yearly. You may try the service free for one month.
    • Office Personal:             $69.99 per year or $6.99 monthly. This is for installation on one device only. This service must be renewed yearly. You may try the service free for one month.
    • Office Home & Student:  $149.99 one-time purchase cost. This is a purchase for installation on one device only and is not renewed or have a monthly fee. It does not expire.
    • The second and third options include fewer additional apps such as having no Outlook app. Check the Microsoft site for details.

·       Finally, and this is important, when purchasing any of these Office upgrades, you need to register your purchase on the Microsoft web site, including which device or devices the apps are installed on. This can be changed later if a device is replaced. You must do this registration or you can have problems.

In summary, Apple has warned us of the coming change to 64 bit operations only. It has occurred. Now, it is up to us to decide how to proceed. I hope this information is helpful to you.


When updating to Big Sur on my mac my Microsoft Office - Excel and Word will not open, message comes up that I need to pay a yearly subscription to use Excel and Word.

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