If you own a Dell computer and are using the Realtek High Definition Audio drivers, you most likely run into problems when updating the drivers to the newest version.

Mostly, the problem will show up as headphones are not detected anymore, when connected, or the ASIO driver is not available anymore, or the Waves Maxxpro audio application is missing.

In order to get everything up and running again, here is the procedure the helped on my Dell XPS 13:

• Install the newest drivers for Realtek Audio from the Dell support page (e.g.
  https://www.dell.com/support/home/us/en/19/drivers/driversdetails?driverid=99pht&lwp=rt)
• Install the Waves MaxxAudioPro extension, which now is available as App through the Windows Store:
  https://www.microsoft.com/en-us/p/waves-maxxaudio-for-fujitsu/9nhs545j4sc9?activetab=pivot%3Aoverviewtab

Now, everything should work like before...
Hope this helps!