the link in your answer no longer works is there a new link, or can you tell me how resolve this problem dell digital delivery not connected to internet, but my internet is working fine? I have same problem as the guy above

LINK DOES NOT WORK!

The link is several YEARS old of course it doesn't work.

https://www.dell.com/support/contents/us/en/04/article/product-support/self-support-knowledgebase/software-and-downloads/download-center/dell-digital-delivery

<ADMIN NOTE: Broken link has been removed from this post by Dell>

https://downloads.dell.com/FOLDER05073855M/4/Dell-Digital-Delivery-Application_C3JKT_WIN_3.5.2000.0_A00.EXE

Dell Download Center

https://www.dell.com/support/contents/us/en/04/category/product-support/self-support-knowledgebase/software-and-downloads/download-center/

Having been unable to find a solution on any forum, and this being the top search result, I thought it would be good to post my solution here. 

The version of Dell Digital Delivery (DDD) I had installed was 3.1. I downloaded Support Assist and DDDfixit, which got me DDD v.3.3. This continued to give me the "has not been able to connect to the internet" error. I then found the Dell drivers and download page, which gave me DDD v.3.5. After uninstalling, reinstalling, rebooting, each time, I still got the error. 

Finally, I went to the Product Support page (https://www.dell.com/support/home/us/en/04/?app=products),  detected my machine, selected the "Drivers and Downloads" tab, selected the arrow to expand the DDD box, selected "View full driver details" , and selected "Versions", and found there was another version, DDD 3.5.2013.0, A09.

Downloaded, uninstalled and reinstalled, and voila, finally I was able to open and use DDD.

There are version 4 releases in 2019   Version 4.0.41.0, A15

This package is only for systems running Windows 10 OS versions 17134 and above. To find the version of your operating system, tap the Windows key, type "winver" in the Start menu and press Enter. If you have an OS version below 17134, you will need to download and install the Windows 7 version (3.5).

https://www.dell.com/support/home/us/en/04/drivers/driversdetails?driverid=wwc80

https://downloads.dell.com/FOLDER05760110M/2/Dell-Alienware-Digital-Delivery-Application_WWC80_WIN_4.0.41.0_A15.EXE

https://www.dell.com/support/contents/us/en/04/article/product-support/self-support-knowledgebase/software-and-downloads/download-center/dell-digital-delivery

Version 3.5.2013.0, A09 Dell Digital Delivery Application and is supported on Alienware, Inspiron, Latitude, OptiPlex, XPS, Precision, Vostro, and Dell Venue

This package fixes the address privilege escalation vulnerability CVE-2018-11072

(visit https://www.dell.com/support/article/SLN313559 for details).

https://downloads.dell.com/FOLDER05698145M/2/Dell-Digital-Delivery-Application_C1T12_WIN_3.5.2013.0_A09.EXE

This worked! Thanks for the suggestion.