How To Repair Windows firewall can't change some of your settings Error code 0x8007042c

When was the last time you were able to change the firewall settings?
Did you make any changes to the computer recently?
What antivirus software is installed on you computer?

Check for the service for Windows Firewall Service if it is started or not.
1.      Click on Start
2.      In the start Search box type Services
3.      Right Click on - RUN AS ADMIN

Check if the below mentioned services has the mentioned status and start up type.

windows firewall      Started      Automatic\Manual.
base filtering engine      Started      Automatic\Manual.
windows firewall autorization driver      Started      Automatic\Manual.

Also check the dependency services that are required for Windows Firewall Service to run.
To check that double click on the service and click on the dependency tab.