This problem may apply to several computers, but in my case, it was an issue with my new Laptop. Even after unpacking, I was unable to activate memory integrity for kernel isolation. The screenshot above shows that it was due to an incompatible driver. In the latest Windows 10 updates, you can click on the blue link to see a list of incompatible drivers.
In most cases, the incompatible driver is wdcsam64_prewin8.sys, the Western Digital driver included in Windows 10. If you click the link and wdcsam64_prewin8.sys appears in the list, follow these steps to remove this driver if it is not needed on your system.