Windows Security Log Event ID 4646

Operating Systems Windows 2008 R2 and 7
Windows 2012 R2 and 8.1
Windows 2016 and 10
Category
 • Subcategory
Logon/Logoff
 • IPsec Main Mode
Type Success
Corresponding events
in Windows 2003
and before
 
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4646: IKE DoS-prevention mode started

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