added registry option

windows/security/threat-protection/windows-defender-exploit-guard/enable-network-protection.md

@@ -28,6 +28,7 @@ You can enable network protection by using any of the these methods:
 - MDM
 - Group Policy
 - PowerShell cmdlets
+- Registry
 
 ## Intune
 
@@ -79,6 +80,16 @@ Set-MpPreference -EnableNetworkProtection AuditMode
 
 Use `Disabled` insead of `AuditMode` or `Enabled` to turn the feature off.
 
+## 
+
+Network protection can't be turned on using the Windows Security app, but you can enable it by using Registry editor.
+
+1. Click **Start** and type **regedit** to open **Registry Editor**.
+1. Navigate to Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows Defender\Windows Defender Exploit Guard\Network Protection
+1. Set the value: 
+   0=off
+   1=on
+   2=audit
 
 ## Related topics