Acquia Dev Desktop installation – "Site can't be reached". How to get it back?

I had Drupal 8.4.4 running OK in Acquia Dev Desktop 2 in Windows 10 with PHP 7.1.11 . I installed DrupalVM (to try and solve an out-of-memory issue I have with upgrading to 8.5.0-beta1). Now when I visit my Dev Desktop Drupal installation at http://drupal.dd:8083/ in Chrome I get this:

“This site can’t be reached. drupal.dd’s server IP address could not be found. ERR_NAME_NOT_RESOLVED”.

The Dev Desktop stack has been started and the Dev Desktop config is unchanged.

I also can’t now reach phpMyAdmin at http://localhost:8083/phpmyadmin/.

I guess the DrupalVM and Dev Desktop installations should be completely independent.

What can I do to try and regain access to my Dev Desktop Drupal installation?