The first step toward creating a PEM file is to download the certificates your certificate authority sent you. This will include an intermediate certificate, a root certificate, a primary certificate, and private key files.  Next, open a text editor, such as WordPad or Notepad, and paste the body of each certificate into a new text file. They should be in this order: Private Key, Primary Certificate, Intermediate Certificate, Root Certificate. Add starting and ending tags. They’ll look like this: -----BEGIN CERTIFICATE ----- and -----END CERTIFICATE -----   Finally, save the file as your_domain.pem.