failed to connect to api.dropboxapi.com/10.16.111.13 (port 443)

[Alex001]

When I use the official Demo dropbox-sdk-java/examples/android/  

I have the following problems

Failed to list folder. failed to connect to api.dropboxapi.com/10.16.121.33 (port 443) from /10.16.0.25 (port 46762) after 20000ms

I need help.

Thank you in advance

my sdk version

com.dropbox.core:dropbox-core-sdk:3.1.5

[Greg-DB]

Based on this output, it looks like there's an issue with your network connection. The Dropbox API servers themselves are currently resolving and working correctly.

It looks like you're trying to connect to a private IP address (10.16.121.33, not Dropbox) and that's failing. You'll need to debug your network connection to see why it's not working. For example, make sure your DNS server is working properly, and make sure there's no firewall, proxy, etc. interfering with the connection.