Dropbox Paper Error 404

[erwevan]

I often use .paper files for taking notes and tracking the progress of tasks with checkboxes on my work team. I'm using Windows 11 with the latest version of the Dropbox app (175.4.5569 at the time of writing). Every time I open a .paper file from my file explorer, it opens a tab in my browser that reads "Error (404) We can't find the page you're looking for." The URL also switches to https://www.dropbox.com/desktop_login. If I check the Dropbox icon in my task bar, I'm still logged in to the app.

I can open the same exact .paper files from the Dropbox folder structure in my browser with no problems. This has been my temporary workaround, but the problem is still annoying and inconvenient. My boss, who uses a macOS, doesn't have this problem. I've tried logging out and logging back in and uninstalling and reinstalling the program with no success. Hyperlinks with the URL to the .paper file don't work either. Does anyone know how to fix this?

Thanks

Opening from a hyperlinkOpening from the .paper file in my file explorer

[Megan]

Hi @erwevan, let's jump right into this! 

Do you notice this behavior with all of your Paper files, and if so, when did this start happening? 

Also, from the screenshots it seems like you're using Firefox as your default browser. Can you make sure it's updated with the latest update if there is any? 

Keep me posted, and we'll take it from there!

[erwevan]

Well, I thought I had the latest version of Firefox. That about fixed it 🤦

Thanks!

[erwevan · Accepted solution]

Checking on this a few days later, the issue has returned. I tried disabling my extensions on Firefox and discovered that the Containers function in Simple Tab Groups seemed to be causing the problem. Hopefully this helps anyone in the same boat!