I can't open files on my computer via the website any more

Hi Coco8, thanks for messaging the Community!

As it seems that you're referring to the Open button, please could you check this article to see if any of the steps help?

Keep me posted!

But through my account, Some of file have those button, and some of file didn't have this button. And same file, others have this button, but I didn't have.

Are these for similar file types or just random files in different locations?

Same file, others have this button, but I didn't have：This is similar file types. Only founder's file have those button, but others didn't. Those are same location.

Some of file have those button, and some of file didn't have this button：This is different locations. (Founder different)

Hey Coco8. Is the Open button missing for the exact same files on a different browser?

Yes, still missing on the different browser.

Hmm, thanks for checking that. In this case, I’d like you to take one extra step with them, and also test this via an incognito window on your default browser.

Does that seem to make a difference?

Sorry...Because of our company's permission, we can't use inincognito window on my browser.
So do you have other methods?

Hi from me as well, Coco8.

Can you try to clear your browser's cache, to see if that helps?