![the windows defender service started and then stopped the windows defender service started and then stopped](http://woshub.com/wp-content/uploads/2018/07/disableantivirus-registry-parameter-to-disable-def.png)
Once it has been turned on, Windows Defender will open automatically.
![the windows defender service started and then stopped the windows defender service started and then stopped](https://www.wintips.org/wp-content/uploads/2019/10/image-71.png)
NOTES: Because the Control Panel is a traditional Windows Desktop application, if you were not already there, the interface will change to the Desktop and the Control Panel window will open. Press the Windows Logo + X key combination on the keyboard and, from the list, click Control Panel.If you prefer to use Windows Defender to protect your computer, you can disable or uninstall the currently installed anti virus software and then follow the steps below to enable Windows Defender.
#THE WINDOWS DEFENDER SERVICE STARTED AND THEN STOPPED FULL VERSION#
Microsoft® Windows® Defender is bundled with the Windows® 8 and 8.1 operating systems, but many computers have a trial or full version of other third-party anti virus protection program installed, which disables Windows Defender.