SomeWindowsTen users complained that the cumulative update caused their PC to fail to respond, especially after the first reboot after the patch was installed. Other users report that they have experienced occasional freezes, and sometimes specific functional errors - such as a sudden failure of the right-click menu of the mouse.
Both Microsoft Community and TenForums have error report posts on updating KB4493509.
One user described:
Hours after using the patch, the whole machine, mouse and everything were locked. Unable to access the task manager, you can only press the power button for a long time to turn it off. The event viewer indicates a DCOM error.
Another user wrote:
The same thing happened to me. When I press the reboot button and restart, the computer freezes and dies on the Windows login page. I can only restart in safe mode, uninstall the patch, then start normally, and everything is OK.
Today, Microsoft only notifies Windows 7 and Windows 8.1 that monthly updates will cause some hardware fake deaths. However, it was not mentioned that Windows 10 cumulative updates could cause similar failures. At present, the feasible solution for users who have failed is to uninstall the cumulative update from the security mode. It is better for users who have not upgraded to turn off the automatic update until Microsoft repairs or gives an official solution.