I have tried repeatedly to update my Windows 10 x64 including manually downloading the update.
When I manually downloaded the update and opened it to install I received a message that the update was already installed yet my system continues to give me the following error message and to prompt me to restart to complete the install:
2017-05 Cumulative Update for Windows 10 Version 1607 for x64-based Systems (KB4019472)
Failed to Install