I made a new certificate with ZeroSSL and now I have a crt file and a Key file for the domain. I'm using no tools because I would like to get the process runing first by hand.

To use it with IIS 8.5 must I have to convert this to a pfx file? How to do this without OpenSSL?

1 Answer 1


Save certificate and key files with identical names in the same folder (cert.cer and cert.key, for example) and use certutil:

certutil -mergepfx cert.cer cert.pfx

and enter PFX password.

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