Unable to log into Dropbox App. "Previous sign in interrupted. Please try again"

DropBox is using Port 17500 which is for LAN. 

I set traps on all the dropbox port activity

INTERNET OUT using  a TCP/UTC protocol with no ports/address/ICMP assigned is working  - trap verified successful

INTERNET IN using  a TCP/UTC protocol with  port 17500 is not trapping  neither success or fail

The DEFAULT RULE  is both in and out and it is not trapping

Given what I understand the problem is likely in the assignment of Ports

Hi MikeDyr, thanks for the details. I think it would be best to contact the support team since they have more tools and steps available to troubleshoot this matter for you.
You can submit a ticket to the team via this link while logged into your Dropbox account.

although I am pretty rusty at troubleshooting problems like this, It looks like Dropbox and Dropbox Update are not configured with viable internet IN ports. That is beyond my grey cells and would appreciate some help. I'll check back tomorrow.

Thanks Jay I have some tasks to perform and will do that later today or tomorrow.

I got the same trouble as above described by members. I was using Dropbox for many years on the free level, my account space is only 20% full. My laptop dropbox files do not sync, lost the dropbox icon in my taskbar. Tried to load again the dropbox app in the laptop but when installation finishes I get again the sign in box with the message "previous sign in interrupted" . Nevertheless I have access to my dropbox.com/home, find all my files that can normally be synced only with the smartphone android app. When I open avatar>settings>security I see my laptop in "devices have been unlinked from your personal Dropbox account", though I never unlinked it. Please give me a solution.

I was using Dropbox the free option for years. I have the Dropbox app in my smartphone (android) and synced everything with Dropbox app in my laptop, no problem. Suddenly I realise that my laptop dropbox files do not sync, lost the dropbox icon in my taskbar. Tried many times to load again the dropbox app in the laptop but when installation finishes I get again the sign in box with the message "previous sign in interrupted" . Using Chrome browser, but also Explorer failed. ( I have no access to the desktop app to find Dropbox icon, avatar, preferences...) Nevertheless I have access to my dropbox.com/home, find all my files that can normally be synced only with the smartphone android app. When I open avatar>settings>security I see my laptop in "devices have been unlinked from your personal Dropbox account", though I never unlinked it. 

The bot is looping (this is its third reply).

Megan​, I am asking you to please find an actual human being to talk to about this problem.

Yes, this is bull**bleep**.  we're talking to AI bots.  I can't reply to any of the emails.  They keep coming back.  This all worked when I had the free account.  Once I subscribed, that's when all this started.  I wouldn't recommend paying for this..

Hey rosakis, if you check your email address, you should be able to see a new message from me. 

Can you please reply back, so that we can investigate this further?

Thanks for your response. I replied to your email including the above information on my nproblem. I hope to get an answer soon.