You can export a PEM-format certificate from a Windows system. On Windows, the PEM certificate encoding is called Base-64 encoded X.509 (.CER).

Become familiar with how to use Certificate Manager on a Windows system. For more information, see the Microsoft TechNet Web site at


On the Windows system, open Certificate Manager (certmgr.exe).


Right-click the certificate to export and select All Tasks > Export.


Select options in the Certificate Export Wizard.


Select Base-64 encoded X.509 (.CER) for the file export format.

For the certificate to work with Horizon FLEX, you must choose this option.


Provide a location to save the certificate and a file name.


Review the settings you selected and click Finish.

The certificate file is saved to the location you indicated.