For some odd reason Lync App still was "searchable" in Windows Store this morning, then it disappeared. It can be installed using direct link to Store. I've added this note in Lync App tutorial:
It seems that at the moment the Lync App cannot be found in Windows Store when searched. However, the app is still there, you just need to use a workaround.
To find and get it, us this link (only work in Edge & IE): Lync App in Windows Store
It finds the app for you.
That link opens Store and let's you download Lync App. BTW, I later found out the Store link in above note also works with Chrome.
(From Lync App - Join an Online Meeting as Guest - Windows 10 Forums)
Thanks Kari, I used your link. for Lync, took me right to the page. When I clicked the button to download it, that is when I got that it is not available at this time.
Isn't Lync now Skype?