Internet Key Exchange – IDEEXT.DLL

Ikeext.dll will be found in your Windows\System32 folder. It installs as part of your Windows Vista operating system. It loads your IKE (Internet Key Exchange) extension. It's required for authentication by IPsec-protected communications. You'll find more information at http://msdn2.microsoft.com/en-us/library/aa364936.aspx. If you're getting some cryptic error involving this file, you'll find a rundown of error codes at http://msdn2.microsoft.com/en-us/library/ms681384.aspx.

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Microsoft