Folders keep opening by themselves on the web browser on my computer

Hey FixIS, thanks for posting here. 

Do you mind sending over a full screenshot of what you see exactly on your end? 

Are you using Dropbox via www.dropbox.com when this is happening, or the desktop app instead? 

Let me know more details, and we can have a look.

6 tabs open...

 Do you have Dropbox app or are you trying to validate something with Dropbox. Normally sites only open a new tab if anyone clicks on it, or SSO for authentication or any link from the app. May be malware, run a scan on your device.

First off all thank You for answer :)

Desktop app, synchronised with many PCs via dropbox for one particular folder. 
It will just open file explorer by itself with this folder like there is something new waiting. 
Maybe it will open whenever someone on different device upload something in that folder? I really dont know. 

Thank You for Your answer too :) 

As i mentioned above its drop box app. And it is file explorer not internet browser which is opening. 

Device is clean i tried

Hi there FixIS - thanks for bringing this to our attention.

Have you tried rebooting your computer since you first noticed this? 

If you did and this persists, can you quit the Dropbox desktop app and let me know if you notice any difference?

Thanks!

Hi Walter yes this issue persist even after restart

And do you get the same results even when you completely close the Dropbox desktop app as well or not FixIS? 

No, when desktop app is turned off windows doesnt open folder with dropbox by itself

I see, thanks for the clarification FixIS 

Can you try a reinstall then and let me know if you get the same results?