I hate ads. So much so that I’ve created a Chrome Extension to block them at some sites I visit regularly. But then I realized the best way to stop these things is at the source itself. Enter the hosts file.
I figured out a way to block Skype ads using a handful of host file entries. I’ve mentioned them below if you want to take a look. These entries have been tested on the latest Skype version as of today (October 13, 2018).
The above host file entries will not remove the placeholders in the side bar. For that, you need to get technical.
Based on your OS, go to: %appdata%/skype/YOUR_USER_NAME/config.xml and set all Advert related values to 0.
Reboot your system and your Skype ads should be gone.