After some users complained that a Windows 10 Anniversary update failed to install on their computers, Microsoft issued a “fix-it” tool to address issues with the install of KB3194496 (Cumulative Update 14393.222).

"We've been working diligently on this issue and are finalising a clean-up script that will fix the underlying issue preventing the install of KB3194496 (Cumulative Update 14393.222) for affected users," ZDNet quoted the company as writing in an emailed statement. "Your patience during our research and subsequent work is greatly appreciated."