How to use a 1024 bit certificate key on a Cisco 4.6 VPN Client that accepts a 2048 bit certificate key

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If you perform a Simple Certificate Enrollment Protocol (SCEP) request, add these two lines into the VPNClient.ini file. This allows you to select the key size.

[CertEnrollment]
Keysize=what key size you want

The VPNClient.ini file is located under C:\Program Files\Cisco Systems\VPN Client.

Note: The VPN Client only supports up to 2048 key sizes.