Known Issue ----------- Due to a difference in default keylengths between Windows Millennium/Windows XP and other versions of Windows, the pvkimprt.exe utility may fail when used to import keys between Millennium or XP and other Windows platforms. The following is a workaround: - Use pvkimprt.exe to export the .pvk and .spc files as type .pfx on a version of Windows where the keys were generated (i.e. if the keypair was generated on Windows Millennium or XP, perform the .pfx export on a Millennium or XP machine). - Once the keys have been exported as type .pfx, they can be imported on any Windows platform using a certificate import tool (e.g. Certificate Import Wizard).