Also, enabling Windows Defender in the "Turn Windows Features on or off" options might not enable the program.
2. From the results, right-click Command Prompt and Run as Administrator. Type the following command: (If you have logged in as Administrator, you can directly execute CMD)
3. When the system returns "WMI repository is not consistent" message, run the following command:
This will perform a consistency check on the WMI repository and resolve the issue. Restart the system, once done and try enabling Windows Defender program.
Article ID: 555962 - Last Review: 14 Feb 2017 - Revision: 1