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Cannot open excel files on my Mac, files aren't corrupt.

I cannot open all of my excel files in my Dropbox. Everything was fine yesterday, and I still worked with all my files. But today it cannot. The files weren't corrupt, I tried to open in downloads folder and everything was fine.

I have already reinstall the app, but still cannot be opened.

Maybe someone can help me about this problem, thank you.

Screenshot 2024-03-12 at 21.23.51.png

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Jay

Hi @nabillaamalia, thanks for messaging the Community!

Are the Excel files marked as available offline in your Dropbox folder?

This will help me to assist further!

nabillaamalia

Yes sure. I don’t know what’s wrong with the files or the Dropbox, this is my very first time cannot open my files

Mark

Do they open if they are outside of the Dropbox folder?

Have you tried a repair of Office 365?

nabillaamalia

Yes, no problem outside the Dropbox. I still use the file from Dropbox the day before and everything was normal until yesterday I cannot opened it at all.

I’ve tried repair the Office 365 and the Dropbox but nothing happened

Megan

Hey @nabillaamalia, would you mind sending me a screenshot of an example file that fails to open in Excel, but within your Dropbox folder, in order for me to double-check the icon next to it?

If you quit the Dropbox app, I'm assuming the files open without an issue, right?

nabillaamalia

Here it is, still cannot be opened

Screenshot 2024-03-13 at 21.50.41.png

Jay

According to the screenshot, the file is not available offline as there is no green icon there.

Please could you mark the file as available offline first, and then try opening it again.

nabillaamalia

I already did, but nothing changed. Screenshot 2024-03-16 at 09.34.15.png

Jay

What about if you quit the Dropbox desktop application entirely, and try opening it again?

If you copy and paste that file to a non-Dropbox folder, does it open?

marchenkovasea

I have similar issue now for 2 weeks. Many of my word documents cannot be opened, but outside dropbox folder they work well. In dropbox I dont know why some files have a kind of \\?\ at the beginning of the file destination.

Hannah

Hey @marchenkovasea, are you on a Windows computer?

Can you take a look at Здравко's response here to see if you'll find any useful info?

marchenkovasea

Hi Hannah,
Yes, it is windows and that thread was just recently opened by me. Matter solved: too long folder names

nabillaamalia

Yes, even I’ve tried to reinstall the Dropbox and the Microsoft 356.
Anyway, the file that cannot be opened was in binary format. Did Dropbox no longer supports binary format?