Microsoft will be eliminating support of Skype Managed Accounts, a k a Skype Business Accounts, as of March 29, 2016.
Microsoft began notifying Skype Managed Account users of the deprecation today, February 16. (Thanks to Microsoft-news.com for the heads up.)
There are two types of Skype accounts: Personal and Managed. Personal accounts belong to the individual using that account. Managed accounts are created in Skype Manager and belong to the Skype Manager that created them.
According to Microsoft's page about its Managed Account phase-out, starting March 29, Skype Managed Accounts will automatically become personal Skype accounts...
Read more: Microsoft to eliminate Skype Managed Accounts feature by March's end | ZDNet