Hi there, 

Welcome to Box Community and glad to assist! 

Can you please run the following troubleshooting steps? 

• Updating your browser to the latest version


• Clearing your browser's cache


• Using Box with an alternate browser, computer, or network. 


• Temporarily disabling any internet security/firewall programs to test whether they conflict with Box (Note: you may need clearance or assistance from your organization’s IT department/helpdesk to do this)


• Temporarily disabling any plugins/extensions in your browser


• Removing unwanted extensions, plug-ins, ads, pop-ups & malware:
  
  • 
    Chrome, Edge, Firefox, Safari
    
  
  

If the issue persist, please attach a screenshot in the forum to get a closer look. 

Hope it helps! 

Thank you for reply.

I tried but nothing has changed.

Still page not found.

i saw another japanese guy asked same question in this year.

maybe this problem is happening in japanese website.

Please fix it.