2,364 questions with Microsoft 365 and Office | Install, redeem, activate | For home | MacOS tags

Sort by: Updated
2 answers

install microsoft 365 apps on old imac

I have 2017 retina 4K 21.5 inch imac. Currently updated to MACOSX Sonoma. How can I install and use microsoft 365 apps? Latest package installer refused to install I'm a registered microsoft 365 subscriber and having been using apps for years. They…

Microsoft 365 and Office | Install, redeem, activate | For home | MacOS
asked 2026-07-14T08:10:09.6833333+00:00
Ben Weinstein, PhD 0 Reputation points
answered 2026-07-15T04:19:32.7566667+00:00
paulr0511 46,400 Reputation points Independent Advisor
3 answers

0x0 Error After Mac Update July 14th, 2026

I’m unable to activate Word or Excel on my Mac. Every time I sign in, I receive: “Unknown Error. An unknown error has occurred. The error code is: 0x0.” My Microsoft 365 Personal subscription is active, and the same account works normally on a different…

Microsoft 365 and Office | Install, redeem, activate | For home | MacOS
asked 2026-07-14T16:05:13.9566667+00:00
CDR1234 10 Reputation points
edited an answer 2026-07-15T03:21:03.2633333+00:00
Zach 0 Reputation points
1 answer

Can no longer edit my word docs on Mac or update anything

I recently updated my MacOS to the newer Tahoe OS. I don't know if this is the cause. I have an emergency time senstive business situation. I went to edit my contract using Word...and all of the sudden it is read only for Mac. I cannot update the 365…

Microsoft 365 and Office | Install, redeem, activate | For home | MacOS
asked 2026-07-14T19:42:49.55+00:00
Bill Miller 0 Reputation points
answered 2026-07-15T02:39:21.9266667+00:00
Azhar Ahmad Smaragdina 0 Reputation points
4 answers

how to install MS office ( Word , Excell ). on my MacBook Pro with OS Monterey 12.7.6 ?

I am a pure user , please be kind to me. My MacBook Pro. Retina 13" is on MacOS Monterey vers. 12.7.6 Processor 2.9 Ghz DualCore Intel Core I5 , Mem 8Gb 1867 Mhz DDR3 , Graphic Intel Iris Graphic 6100. 1536 Mb I want to install MS Office ( mainly…

Microsoft 365 and Office | Install, redeem, activate | For home | MacOS
asked 2026-07-14T01:33:29.8766667+00:00
Yohanes Yahja 0 Reputation points
commented 2026-07-15T02:13:47.84+00:00
Gunasekar N 72,145 Reputation points Independent Advisor
1 answer

Activating Microsoft Office on a Mac

I have Microsoft Office on a Mac, that I've been using for years. The "About" page shows a copyright of 2022. Yesterday, in the middle of the day, after I had worked on editing multiple doc files, when I opened a new one, I was suddenly told…

Microsoft 365 and Office | Install, redeem, activate | For home | MacOS
asked 2026-07-14T11:16:27.22+00:00
Saul Jaffe 0 Reputation points
commented 2026-07-15T01:39:08.2166667+00:00
Saul Jaffe 0 Reputation points
4 answers

Problems activating Microsoft 365 apps on new 24" iMac – they were activated, but now it's asking me to activate again but won't do it when I try

Hi. I have a new 24" iMac, and I use Microsoft 365 for Mac. I had already activated Outlook and Word, but today it asked me to activate them again, and when I tried to log in to Microsoft, it said 'An unknown error has occurred 0x0". I could…

Microsoft 365 and Office | Install, redeem, activate | For home | MacOS
asked 2026-07-14T08:41:53.49+00:00
Tricia D 0 Reputation points
commented 2026-07-15T01:19:45.0433333+00:00
Tricia D 0 Reputation points
1 answer

Activate and Sign-in issue

I already redeemed the Office 2019 product key on August 28, 2025 (320 days ago). And now I cannot use any Office product on my Mac. I couldn't sign in to 'activate' as '_@gmail.com' My product key is '____'. Please check and let me know how I can do it.

Microsoft 365 and Office | Install, redeem, activate | For home | MacOS
asked 2026-07-14T03:57:57.5266667+00:00
Alice Lee 0 Reputation points
answered 2026-07-15T01:07:35.5333333+00:00
Xavier-D 9,720 Reputation points Microsoft External Staff Moderator
1 answer

Microsoft office will not longer save files

Microsoft office will not longer save files and wants me to activate Microsoft 365, but I purchased Office for Mac 2019 outright some years ago and it has been working ok since then up until today.

Microsoft 365 and Office | Install, redeem, activate | For home | MacOS
asked 2026-07-14T06:48:31.4533333+00:00
Echuca Harness Racing Club 0 Reputation points
edited an answer 2026-07-15T00:20:18.1133333+00:00
Norah-L 7,585 Reputation points Microsoft External Staff Moderator
3 answers

Activating Microsoft 365 - error 0x0 notification

I cannot activate my existing Microsoft 365 - I keep getting error notification 0x0 & message to try again later

Microsoft 365 and Office | Install, redeem, activate | For home | MacOS
asked 2026-07-13T19:46:38.3733333+00:00
SeamusStacey 5 Reputation points
answered 2026-07-15T00:11:06.8033333+00:00
Ferdinand Nanalig 31,425 Reputation points Independent Advisor
2 answers

Microsoft Office 365 subscription not working despite having a valid subscription that permits desktop apps and redownloading apps

I have a Microsoft Office 365 personal subscription and have had it since at least December 2025 when I got a new laptop. I verified online that it's still active. Sporadically, my Microsoft desktop applications won't work, requesting I…

Microsoft 365 and Office | Install, redeem, activate | For home | MacOS
asked 2026-07-13T17:44:50.4433333+00:00
Brooke Sartin 0 Reputation points
edited a comment 2026-07-14T23:25:09.9166667+00:00
Norah-L 7,585 Reputation points Microsoft External Staff Moderator
1 answer

Office Home & Business 2019 for Mac not activating after macOS Tahoe 26.5.1 update (Error 0.00)

Hello, I own a valid retail license for Microsoft Office Home & Business 2019 for Mac. The license is correctly associated with my Microsoft account and appears under Services & Subscriptions. After updating my Mac to macOS Tahoe 26.5.1, Office…

Microsoft 365 and Office | Install, redeem, activate | For home | MacOS
asked 2026-07-14T21:22:58.3833333+00:00
Pamela Palomera 0 Reputation points
commented 2026-07-14T21:33:30.94+00:00
Pamela Palomera 0 Reputation points
0 answers

activation office

“I have Microsoft 365 Personal. After upgrading my Mac to macOS Sonoma 14, Word stopped allowing typing and asks me to activate. My subscription is active until September 2026. Activation fails with error code 0x0."

Microsoft 365 and Office | Install, redeem, activate | For home | MacOS
asked 2026-07-14T21:12:10.39+00:00
elena 0 Reputation points
1 answer

How to install Microsoft Office version 16.88

I have uninstalled Microsoft Office 365 on one of my laptops and need instructions how to install the correct version of Microsoft Office 365 compatible with MacOS Monterey. Can you help me please?

Microsoft 365 and Office | Install, redeem, activate | For home | MacOS
asked 2026-07-14T12:33:09.98+00:00
MJ Toles 0 Reputation points
commented 2026-07-14T21:02:17.15+00:00
MJ Toles 0 Reputation points
2 answers One of the answers was accepted by the question author.

Will the July 13 Office 365 certificate change stop my wife running her 365 Family subscription on her Mac's OS Ventura 13.7.8?

My wife shares her Office 365 Family subscription with me. The 13 July certificate change has meant I suddenly cannot run Office including Word and Outlook, through that sharing, on my MacBook Air on Big Sur 11.7.11 because the OS cannot be updated. I…

Microsoft 365 and Office | Install, redeem, activate | For home | MacOS
asked 2026-07-14T10:47:18.2+00:00
Neil Fitzgerald 20 Reputation points
answered 2026-07-14T19:46:45.29+00:00
Neil Fitzgerald 20 Reputation points
2 answers

Still can't activate Microsoft 365

Still can't activate Microsoft 365 - same Error 0x0 message. Writing is what I do and I can't do it. Has there been any indication that Microsoft may be paying attention to this? Btw, I have Sequoia 15.6.1 which more than meets the minimum requirement…

Microsoft 365 and Office | Install, redeem, activate | For home | MacOS
asked 2026-07-14T17:41:28.1966667+00:00
SeamusStacey 5 Reputation points
answered 2026-07-14T19:07:33.77+00:00
Bob Jones AKA CyberTaz MVP 436.6K Reputation points
2 answers

Office Mac 2019

Dear Support Team, I have two Microsoft 2019 Mac Home business licenses that were legally purchased and are linked to my Microsoft account. However, I can no longer use them. The installer file…

Microsoft 365 and Office | Install, redeem, activate | For home | MacOS
asked 2026-07-14T08:13:07.9566667+00:00
u n 0 Reputation points
commented 2026-07-14T19:02:42.1966667+00:00
u n 0 Reputation points
1 answer

Can't use Microsoft 365!

I have downloaded and paid for 365 for Mac and the apps won't launch. I've tried to call. I've tried to chat. I've signed up for help. What do I do now?

Microsoft 365 and Office | Install, redeem, activate | For home | MacOS
asked 2026-07-14T17:36:55.69+00:00
LEE REILLY 0 Reputation points
answered 2026-07-14T18:17:07.05+00:00
Alvise Cervellati 5,470 Reputation points Independent Advisor
0 answers

Can't open the app or related files for my free trial of Microsoft 365 on Mac

All my Word and Excel files were working fine on my newish Mac until yesterday, when I was getting popups saying that I needed to subscribe to Microsoft 365. I opted for the free month-long trial and I downloaded the installer. Now nothing opens, and I…

Microsoft 365 and Office | Install, redeem, activate | For home | MacOS
asked 2026-07-14T17:52:50.8966667+00:00
Heather 0 Reputation points
2 answers

Office 2024 for Mac no license found

I have an Office Home 2024 perpetual license visible under this Microsoft account. I redeemed the product key and removed my old Lenovo Yoga. I am now using a MacBook Air (M5). Word Online works, but the installed Office desktop apps show “No license…

Microsoft 365 and Office | Install, redeem, activate | For home | MacOS
asked 2026-07-13T18:29:09.7533333+00:00
Prerna Maheshwari 0 Reputation points
commented 2026-07-14T17:40:58.1266667+00:00
Prerna Maheshwari 0 Reputation points
3 answers

Error message 0x0

Won't let me sign into 365, get error message 0x0 Have already restarted my Mac

Microsoft 365 and Office | Install, redeem, activate | For home | MacOS
asked 2026-07-13T19:48:36.5933333+00:00
Amy Gallagher 10 Reputation points
answered 2026-07-14T17:03:25.1233333+00:00
EmilyS_726 21,585 Reputation points Volunteer Moderator