How Do I Turn on Windows Defender?

Kindly follow the below steps of this works,

• Open Windows Defender by clicking the Start button . In the search box, type Defender, and then, in the list of results, click Windows Defender.
• Click Tools, and then click Options.
• Click Administrator, select or clear the Use this program check box, and then click Save.

Open Settings tab and click Real-time protection on the left. Make sure there is a check mark in the Turn on real-time protection (recommended) check box. That’s how you activate or enable Windows Defender in Windows 8 and 8.1 after uninstalling some competing free or paid anti-virus product.Kindly follow the below steps of this works,

• Open Windows Defender by clicking the Start button . In the search box, type Defender, and then, in the list of results, click Windows Defender.
• Click Tools, and then click Options.
• Click Administrator, select or clear the Use this program check box, and then click Save.

Bonus: How to disable Windows Defender using the Settings app

• Open Settings.
• Click on Update & security.
• Click on Windows Defender.
• Turn off the toggle switch for Real-time protection.

How to disable Windows Defender using the Security Center app

• Open Windows Defender Security Center.
• Click on Virus & threat protection.
• Click the Virus & threat protection settings option.
• Turn off the Real-time protection toggle switch.

Steps

• Open/run Windows Defender.
• Click on “Tools” at the top of the window.
• Click on “Options”.
• Open up the box for Administrative options.
• Uncheck “Use this program” to disable Windows Defender.
• Save your changes.
• Close the confirmation message dialog box.
• Restart your computer to make sure your changes are applied.

How To Uninstall, Disable, and Remove Windows Defender

• In Windows 10, go to Settings > Update & Security > Windows Defender, and turn off the “Real-time protection” option.
• In Windows 7 and 8, open Windows Defender, head to Options > Administrator, and turn off the “Use this program” option.

Should I turn on Windows Defender?

When you install another antivirus, Windows Defender should automatically be disabled: Open Windows Defender Security Center, then select Virus & threat protection > Threat settings. Turn off Real-time protection.

How do I turn on Windows Defender antivirus?

Turn on Windows Defender

1. In Start, open Control Panel.
2. Open Administrative Tools > Edit group policy.
3. Open Computer Configuration > Administrative Templates > Windows Components > Windows Defender Antivirus.
4. Open Turn off Windows Defender Antivirus and make sure it’s set to Disabled or Not configured.