Macos Sequoia 15.0 and office 365 - not responding

About two weeks later, the issue seems to have resolved. No problem opening Word and PPT docs for about the last week. Was on OS 15, updated to 15.1 just a couple of days ago so that wasn't it.

This worked for me:

https://support.microsoft.com/en-us/office/uninstall-office-for-mac-eefa1199-5b58-43af-8a3d-b73dc1a8cae3

I used to Use Office 2016 permanent license products and use perfectly, unit with Sequoia 15.0,

After that .docx and .xlsx files became idle.

When I try to ask, "please choose app" notification pop-up.

I felt like 2016 in not compatible with Sequoia 15.0.

I bought Office 2021 permanent license

Deleted 2016 and installed 2021.

Still same, nothing changed.

I still can't open .docx and .xlsx intention files.

.ppt is working interestingly.

I send complaint to Office support desk.

No reply.

Sounds like the usual infuriating level of unhelpful feedback from "support".

The fault absolutely cannot possibly lie with Microsoft not ensuring that their flagship product for MacOS runs on the preview developer previews of Sequoia or indeed the production version of the new OS. No, no no...

What an arrogant response...

Search Terminal in Mac and

This worked for me: Open the Terminal and run the following commands:

enter below 2 lines and click enter

/System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/LaunchServices.framework/Versions/A/Support/lsregister -kill -r -domain local -domain system -domain user 

Now enter below 2 lines and click enter, Let it run 2 mins and quit terminal it will fix issue

sudo /System/Library/Frameworks/CoreServices.framework/Frameworks/LaunchServices.framework/Support/lsregister -kill -seed -lint -r -f -v -dump -domain local -domain system -domain user -domain network

How I Fixed It

Since upgrading to macOS Sequoia (15.0.1), I’ve been facing issues with Microsoft Office 365 (version 16.89). Every time I tried opening a Word, Excel, the application wouldn’t respond, forcing me to quit and restart it. After reinstalling Office multiple times without any luck, I finally found a solution: resetting macOS to factory settings.

To fix the issue, I went to Settings > General > Transfer or Reset, and did a full reset. After that, Office 365 began working as expected, allowing me to open and work on files without freezing.

This process solved the problem for me, so if anyone else is facing similar issues, it might be worth a try!

Hi guys. So i have tried everything that you said, also what microsoft aupport said including office reinstall and ios reinstall, nothing worked. Then i went to microsoft autoupdate -> advanced-> update channel choose “beta channel” and there you have it :) it works

Thank you for this. I tried to do "open with" and did indeed see that "recommended apps" was the option. I changed that to "all apps" and opened the app. I was hopeful that this would magically address my problem too which is not actually opening files but saving a copy (and saving new files as well), but, alas, it did not.

Please keep the suggestions coming folks. This is a horrible experience for everyone - and I just got my first Mac in decades right before the update, not a good way to start a renewed relationship. ugh

I am able to use the online version as well. Otherwise I would also have to use a Windows machine.

This is still incredibly inconvenient since the apps are not the same and it seems like the online apps don't have all of the features the desktop ones do (or at least I don't have time to figure out where they are hiding). At least I can go to the online app to create and save a file and then use the desktop to continue. No save as and I can't export a file to another format (like PowerPoint to mp4 or Word to pdf or Excel to csv).

The 15.01 did not fix the issues

It Only works in the online Version. Not if you want to work in the local installation. Here ist works for some time and then it stops. The software does not connect to your profile in m365.

I have two laptops, a MacBook Pro M1 2021 and a MacBook Air M1 2020. Both have been upgraded to macOS Sequoia. While the Microsoft apps work perfectly on the MacBook Pro, they are completely unresponsive on the MacBook Air. I’ve tried deleting and reinstalling the apps twice, but the issue persists. It’s very frustrating.

Not a problem with office 365 freezing but I am getting a lot more Excel errors stating it's "...run out of resources while attempting to calculate one of more formulas...." on spreadsheets that worked fine prior to the Sequoia release. This on an M2 Air with 24GB RAM

But the issue is persisting with the 15.0 stable release. The only thing that makes Office 365 (web) manageable is using the 'icon' view, everything else is just a blank page. Constant reloading after I click a link to open the link.

It is only an issue in Safari for me. Using Office 365 (web) with Firefox, everything works fine.

[Edited by Moderator]