Kentico 9 and the Windows 10 April 2018 Update
Knowledge Base Article
As with all combinations of software, sometimes updates increase or improve functionality and other times something that used to work before stops working after the update is finished. Because of an unforeseen addition to the Windows 10 April 2018 Update, typical installations of Kentico 9 have run into a breaking change. The good news is, there is an easy fix, so read on.