INFORMATICS

Error HRESULT: 0x80070520 when adding SSL binding in IIS

Error There was an error while performing this operation

Details:

A specified logon session does not exist. It may alredy have been terminated. (EXception from  HRelult: 0x80070520)

you can use the option to generate a certificate:

openssl pkcs12 -export -out domain.name.pfx -inkey domain.name.key -in domain.name.crt

The key file is just a text file with your private key in it.

If you have a root CA and intermediate certs, then include them as well using multiple -in params

openssl pkcs12 -export -out domain.name.pfx -inkey domain.name.key -in domain.name.crt -in intermediate.crt -in rootca.crt

If you're looking for a Windows graphical user interface, check out DigiCert. It is a fairly simple program with an easy interface.

On the SSL tab, import the generated certificate. Then, after selecting the Certificate, you can export the file as PFX with or without a key.
https://www.digicert.com/util
This program can also repair a certificate that was uploaded with an error