WSOD after enabling admin menu on fresh D8 installation

@sopranos: You need to provide the log details or some error message in order to help you more. You can either check your drupal log messages if accessible or go to you apache error logs and see what error message it has registered. Once you post your error message then only we can help you.

does this mean you think it does work?

i get this when enabling on clean D8 install:

Fatal error: Cannot instantiate interface Drupal\Core\Cache\CacheBackendInterface in E:\www\drupal8\core\lib\Drupal\Component\DependencyInjection\Container.php on line 268

only way to get site back is to delete the module

Did a fresh D8 install and enabled this module and immediately got the Fatal Error.

Highly recommend simply removing the Drupal-8 version of the module so it can't even be installed. If this isn't practical, add a patch so that user gets a message when installing the module and the module never gets installed.

Please refer https://www.drupal.org/node/2563867. This might help you.

The fix is a little tricky but it can be removed and your site can be repaired by using Drush to remove the module and then use Drush to rebuild the cache's.

If you don't have Drush follow these instructions: https://www.drupal.org/node/2259267#comment-11184597

This module has been deprecated for Drupal 8.
For Drupal 8: the Admin Toolbar provides an experience similar to admin_menu with the core toolbar.