Convert Crt and Key to Old Pfx
convert a crt and key /pem file to pfx for window 2008
normal conversion windows 10 and later
openssl pkcs12 -export -out example.pfx -inkey example.key -in wildcard.example.de.crt
validate
openssl pkcs12 -info -in example.pfx
conversion for Windows 2008
openssl pkcs12 -export -out exmaple.pfx -inkey exmaple.key -in wildcard..de.crt -certpbe PBE-SHA1-3DES -keypbe PBE-SHA1-3DES -nomac