While trying to update a driver for my XPS 8940, I found I couldn't run SupportAssist. So I downloaded the latest version to my machine. I clicked on the .exe file, and after about 60 seconds of waiting, I received the following notification: "This PC needs to be online to continue. Check your internet connection, then try again."

Because I was able to download the file from the Dell website, I presume I have an active internet connection.

What should be my next step?

Thank you.