Convert Certificate into X.509 Format

After you have gone through your identity provider's setup:

1. From the AD FS Management console, choose ADFS > Service > Certificates. Right-click on your token-signing certificate and click View Certificate.
   
2. Select the Details tab and click Copy to File.
   
3. Click Next to start the wizard. Select Base-64 encoded X.509 (.CER).
   
4. Select a location on the file system to save the exported certificate file.
   
5. Click Finish to complete the export.