Office 2021 for Mac activation — purchased license not recognized

Question

Office 2021 for Mac activation — purchased license not recognized

Annoyed 10

I purchased Office 2021 for Mac directly from Microsoft. My Microsoft order history still shows the purchase, and I downloaded and reinstalled Office from that order. However, Word 16.114.1 on macOS Tahoe 26.6.2 says my Office 2021 license is not supported, and when I sign out and then sign back in my Microsoft account says no license found.

I have already reinstalled Word from Microsoft and restarted my Mac. I need a support agent to investigate my existing purchase and restore activation of my perpetual Office 2021 license. I do not want to purchase a Microsoft 365 subscription to replace a license I already paid for.

Børre Mofoss 0 Reputation points

2026-10-25T08:57:34.2133333+00:00

Title: Office Home & Business 2021 for Mac – activation failure after update to version 16.114.1

I have a perpetual license for Microsoft Office Home & Business 2021 for Mac, purchased as a one-time purchase and registered to my Microsoft account.

On October 25, 2026, both Word and Excel suddenly stopped working correctly. Word displays the message:

“Office 2021 license is not supported with this version of the application.”

The About Word window shows:

Version: 16.114.1 (26102031)

License: Not activated

macOS: Tahoe 26.6.2

My Microsoft account still lists Office Home & Business 2021 for Mac as a purchased product. Reinstalling the current version appears unlikely to help, since the installer offered by my account is also version 16.114.1.

Other users appear to be reporting the same issue.

Has Microsoft acknowledged this problem, and is a fix being prepared? I would prefer not to uninstall Office or downgrade manually if an official fix is imminent. I should not have to purchase a Microsoft 365 subscription to continue using a perpetual Office 2021 license.

Thank you for any clarification or assistance.
Andrew Sutphin 0 Reputation points

2026-10-25T17:35:40.7466667+00:00

I can confirm that I am experiencing the same activation problem with a valid Office 2021 for Mac license.

I purchased Office Home & Business 2021 as a one-time purchase on December 14, 2021. It is still listed in my Microsoft account under Services & subscriptions.

After an Office update on October 23, 2026, Word began displaying “Activate Microsoft 365.” My Word version is 16.114.1 (26102031), and Refresh License fails with error code 16. Excel also displays an activation prompt. Microsoft AutoUpdate offers version 16.114, but no newer update.

I have already run Microsoft's Office License Removal Tool, but the problem remains. The Microsoft licensing helper file is present in /Library/PrivilegedHelperTools.

Has anyone found a confirmed fix for this issue? In particular, can Microsoft confirm whether reverting to version 16.113 is safe and supported for Office 2021 perpetual licenses?

I use Legacy Outlook with important email folders stored under “On My Computer,” so protecting that local data is essential.

Thank you.
Stefan Blom 355.6K Reputation points MVP Volunteer Moderator

2026-10-25T17:43:05.5533333+00:00

@Andrew Sutphin

As far as I know, there has been no official comment from Microsoft yet.

The workaround, reverting back to an older build of Office, has been tested by many people by now. You should be able to use it, at least temporarily.

2 answers

Your answer

Børre Mofoss 0 Reputation points

2026-10-25T08:57:34.2133333+00:00

Title: Office Home & Business 2021 for Mac – activation failure after update to version 16.114.1

I have a perpetual license for Microsoft Office Home & Business 2021 for Mac, purchased as a one-time purchase and registered to my Microsoft account.

On October 25, 2026, both Word and Excel suddenly stopped working correctly. Word displays the message:

“Office 2021 license is not supported with this version of the application.”

The About Word window shows:

Version: 16.114.1 (26102031)

License: Not activated

macOS: Tahoe 26.6.2

My Microsoft account still lists Office Home & Business 2021 for Mac as a purchased product. Reinstalling the current version appears unlikely to help, since the installer offered by my account is also version 16.114.1.

Other users appear to be reporting the same issue.

Has Microsoft acknowledged this problem, and is a fix being prepared? I would prefer not to uninstall Office or downgrade manually if an official fix is imminent. I should not have to purchase a Microsoft 365 subscription to continue using a perpetual Office 2021 license.

Thank you for any clarification or assistance.
Andrew Sutphin 0 Reputation points

2026-10-25T17:35:40.7466667+00:00

I can confirm that I am experiencing the same activation problem with a valid Office 2021 for Mac license.

I purchased Office Home & Business 2021 as a one-time purchase on December 14, 2021. It is still listed in my Microsoft account under Services & subscriptions.

After an Office update on October 23, 2026, Word began displaying “Activate Microsoft 365.” My Word version is 16.114.1 (26102031), and Refresh License fails with error code 16. Excel also displays an activation prompt. Microsoft AutoUpdate offers version 16.114, but no newer update.

I have already run Microsoft's Office License Removal Tool, but the problem remains. The Microsoft licensing helper file is present in /Library/PrivilegedHelperTools.

Has anyone found a confirmed fix for this issue? In particular, can Microsoft confirm whether reverting to version 16.113 is safe and supported for Office 2021 perpetual licenses?

I use Legacy Outlook with important email folders stored under “On My Computer,” so protecting that local data is essential.

Thank you.
Stefan Blom 355.6K Reputation points MVP Volunteer Moderator

2026-10-25T17:43:05.5533333+00:00

@Andrew Sutphin

As far as I know, there has been no official comment from Microsoft yet.

The workaround, reverting back to an older build of Office, has been tested by many people by now. You should be able to use it, at least temporarily.

Answer 1

Hornblower409 17,820

Office for Mac Reduced Functionality - Reports involving Version 16.114.1

Tracking multiple reports from Oct 22, 2026 involving Office for Mac entering a reduced-functionality/read-only state or failing to recognize a valid Office license. e.g.

You may have this problem if your Mac is running macOS 12 Monterey or later and your Office version is 16.114.1 (26102031) or later.

How to see what versions you have:

macOS: Apple menu → About This Mac
Office: Word → About Word (or Excel → About Microsoft Excel)

How to submit a Problem Report for this issue:

Submitting a Problem Report sends information directly to Microsoft and is generally a more effective way to help Microsoft assess the scope of this issue, than adding comments, answers, or questions in this forum.

From an Office App do Help → Feedback → Report a Problem

Include in the Report your:

macOS version
Office version
Office edition (Home & Student 2021, Home & Business 2021, etc.)

Copilot suggests this for a concise description to use in your Report (feel free to improvise).

Office for Mac perpetual license no longer recognized after update to the reported version 16.114.1. Office enters a read-only/reduced-functionality state. Unable to create, edit, or save documents. Office displays activation prompts and/or reports that the Office License is not supported.

Possible Workaround - Rollback to an earlier Office build and disable automatic updates.

See the Answer by EmilyS_726 Oct 2026
at https://learn.microsoft.com/en-us/answers/a/13014842

I am also tracking a Reddit post on what appears to be a similar problem:

[External Non-Microsoft Site] https://www.reddit.com/r/Office365/comments/1xd3acb/fix_mac_office_update_falsely_demanding_microsoft/

Reddit is a third-party site, not affiliated with Microsoft. I can't verify the accuracy of the information posted there or endorse the proposed workaround. The root cause described there has not been verified by Microsoft.

Thanks to Reddit user TortelliniTort who first reported the problem and a potential workaround.

Updates

2026-10-25 22:00 UTC - No official response from Microsoft (that I have seen).

Andy Piercy 20 Reputation points

2026-10-23T19:19:03.43+00:00

Emily's solution worked for me...deleted current Office apps and re-installed an earlier version. Am guessing I might have to disable install automatic updates now...wonder where that is?
Hornblower409 17,820 Reputation points

2026-10-23T19:27:08.9566667+00:00

@Andy Piercy said

Am guessing I might have to disable install automatic updates now

https://learn.microsoft.com/en-us/answers/a/13014842

open any Office app, such as Word or Excel. From the top menu, select Help > Check for Updates. When Microsoft AutoUpdate opens, uncheck Automatically keep Microsoft apps up to date, then confirm by clicking Turn Off.
Ranu Mishra 0 Reputation points

2026-10-25T06:43:34.6666667+00:00

how do we uninstall latest update and reinstall earlier version ?
Hornblower409 17,820 Reputation points

2026-10-25T06:49:29.0033333+00:00

@Ranu Mishra said

how do we uninstall latest update and reinstall earlier version ?

See the Answer by EmilyS_726 Oct 2026
at https://learn.microsoft.com/en-us/answers/a/13014842
Andy Piercy 20 Reputation points

2026-10-25T11:23:44.0966667+00:00

Emily fixed the problem for me. Had to delete current Office apps and install older versions (then switch off auto updates) in each Office app.
See the Answer by EmilyS_726 Oct 2026 at https://learn.microsoft.com/en-us/answers/a/13014842

Answer 2

Stefan Blom 355.6K MVP Volunteer Moderator

I have asked a question to a contact at Microsoft trying to figure out if this is a glitch or an intentional change. I will post back with any information I receive.

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