Macos Sequoia 15.0 and office 365 - not responding

I have just updated to Sequoia 15.1 and logged into Microsoft 365 Business Premium via Safari and everything is back working as it used to be under MacOS 14.

This works!!!! Changing channel to beta has made all the difference! Thank you @laimutis225

I found my OWN SOLUTION

It cost me new Mac Office 2021.

When you try to open those idle .xlsx or .docs files, "choose app" section, there is "recommended apps" tab.

I can't choose MS Office Excel and Word.

Change "recommended apps" into "All apps" and tick apply all

you will start to open all your files on your laptop.

I cant send you pictures for that

But I can do that later

I understand your concern. In my case, I didn’t restore any files from Time Machine for exactly that reason — I didn’t want to risk reinstalling the same issue. Fortunately, all my Word documents were already saved in OneDrive, so I didn’t lose any data. As for the apps, I reinstalled everything from scratch, which seemed to prevent any old issues from reappearing. It’s definitely a bit of a hassle, but in my situation, it was worth it since Office 365 started working properly again after the reset.

After updating to macOS 15.1, my Microsoft 365 stopped working again. Unfortunately, I had to go through the factory reset process once more, followed by a complete reinstallation, to get it working properly.

For reference, I’m using an Apple M1 Pro with 32 GB of RAM. It seems like resetting to factory settings is the only reliable solution so far, but it’s definitely a hassle.

This happened to me too. Finally I fix this by factory reset my Mac and reinstall the MS office and adobe creative suite. Not ideal but this is the last resort, at least I can use my Mac again for work.

The "save as" bug has been an issue for months. The only workaround is to right click on the file name and "duplicate" - then you can work on a new file and simply save it. This gets around the problem of the crash when you try to save a file with a different name.

I'm wondering if Microsoft has not updated Office 365 to be compatible with macOS Sequoia. Contact Microsoft to see if this might be the problem and what MS might recommend for a solution.

So I really have to stop worrying about this issue since a new user account works just fine, but I thought I would throw this one out for others to try. I had to restore my original user account from Time Machine for an unrelated reason, and by some miracle I no longer have the issue with Word!

To be clear, this was a TM backup that I made this morning, when the old user account definitely still had the problem. So go figure.

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).

Tengo el mismo problema. Lo que he estado haciendo es trabajar en línea el office, las aplicaciones del office en mi Mac se quedan trabadas y tengo que forzar el cierre.

Thanks Firefly3301. Removing the FontCache fixed it for me :-)

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

Just download the 15.01 update , same problem for 365 on excel, power point and word , Microsoft didn’t show up to fix this , is this a revenge or something like that ? Also my widgets are gone , this issue is so frustrating

my microsoft problems started with 15.0.1 , it was fine before ... other apps are crashing too though so I think this is a 15.0.1 issue and not a microsoft one.

Mine is a M1 Macbook AIr 2020 too - so maybe it's a M1 MBA problem. If so, Apple should have seen that one and beta tested it.