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How to debug connection problem in Dropbox

On my Ubuntu 20.04.6 system, dropbox is installed.
From that Ubuntu system, https://www.dropbox.com can be reached.
But the dropbox client can't connect to the dropbox server to sync the changed files.
Where can I find the configuration with dropbox-account and password?
How can I debug the connection problem?
Where can I find dropbox logging?

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Здравко

@linuxlion wrote:
...
Where can I find the configuration with dropbox-account and password?
How can I debug the connection problem?
Where can I find dropbox logging?

Hi @linuxlion,

That's not possible unfortunately. On any system, Dropbox client doesn't provide any logs info (only exception is limited logs on crash). As seems the company politics that makes the debugging a nightmare (not limited to Linux only, but especially on Linux).

@linuxlion wrote:
...
But the dropbox client can't connect to the dropbox server to sync the changed files.
...

Did you link your just installed Dropbox application with your account or not yet? What does following command show:

dropbox status

Hope this will give you idea what's wrong. 😉

Good luck.

linuxlion

drop status
Connecting...

How can I check the used account?
I change the (old) password on https://www.dropbox.com
Should I then also the password on the client?

Здравко

@linuxlion wrote:
...
I change the (old) password on https://www.dropbox.com
Should I then also the password on the client?

Changing the password should not affect any application' work. All applications are authorizing their access with autogenerated credentials that don't change with changing password. Can you see your application here? If not, that means you haven't linked your application yet.

You can try reset everything and start on clear. Remove your application from devices list if it's there (if not yet, just skip this step). Execute following commands in terminal in the same order one by one (execute all line by line as is without changing anything):

export DISPLAY=
dropbox stop
rm -rf ~/.dropbox-dist ~/.dropbox
dropbox start -i

At the end it will take some time to daemon reinstall and once the application run beings a link will appear in the terminal. Open this link in web browser where you have logged in desired Dropbox account. Confirm you want to link your application. Follow what happens with the 'status' command. If something confuses you, post your terminal content here (both commands and results - including possible error messages).