The registry key we’re using for this is:
If you already added this registry in the past, you’ll notice it stopped working, and here’s the reason: This is a fairly simple task, and it’s quite similar to the workaround from the Lync 20 clients all you need to do is add a registry key and you’re done. Results may not be current” message, you might want to force your client to download the address book. If you used Lync before and now you find that your address book is not up to date and you get the “Address book synchronizing. If you’re using the next version of Office (That’s Office 2016, Preview available for download here), you’re already using the new Skype for Business client.
