I recently struggled to get an SSL certificate installed which I had purchased from GoDaddy.
Following this KB article was very helpful until it got to the part where I needed to import the certificates.
GoDaddy did not provide me the Root Certificate in my original download.
To get the root certificate go to the cert repository located here:
The Root Certificate is: gdroot-g2.crt
The Intermediate Certificate is: gdig2.crt
and the “Server’s Certificate” is: some_16_character_ hexstring_ filename.crt
Using these file names with the old KB article worked for me. Thanks to inductive support for working through this with me.