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Hasnain's avatar
Hasnain
Helpful | Level 5
7 years ago

Dropbox not launching on Windows 7 professional

Hi I am using Windows 7 proffesional service pack 1. just got the computer from a friend. have installed the windows app via the dropbox website. but the dropbox app will not launch. when i click o...
  • Jane's avatar
    Jane
    7 years ago
    Thanks for the swift reply & taking the time to grab this screenshot for me Hasnain
     
    Can you disable Defender as well during the installation? Connection problems usually mean there is a proxy, firewall, antivirus or other type of security program in the way. Incorrect date and time on your computer could also prevent Dropbox from getting a secure connection, please make sure this is not the case before checking anything else.
     
    If your date and time are correct please check other security applications. This resource  goes into detail of the latest known security problem interactions
     
    If you have an antivirus and/or firewall running, make sure you do the following:
    - Allow "Dropbox" (or "Dropbox.exe") to access ports 80 (HTTP) and 443 (HTTPS).
    - Add dropbox.com to the list of approved sites (white list) and make sure it is not on a black list.
    - In general, you need to allow *.dropbox.com and *.getdropbox.com to access all the hosts in our domain, since our IPs are constantly changing you need to approve/unblock by domain.
    - Some antivirus have special features that scan SSL traffic, please review your vendor's documentation and make sure you exclude Dropbox from the list.
    - Some firewalls also act as proxies for your computer, so you might need to add them in the proxies Preferences panel to correctly connect.
     
    If the issue you’re facing persists, please let me know which security applications are you running in your device to make sure this is not an interaction with any of them. 
     
    Please take a bit of your time to try my suggestions at your convenience & let me know of the outcome here. Thanks again for your cooperation & I’m looking forward to hearing back from you! 

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