- Are you the admin on the machine you are connecting the browser and trying to download the Private Key? You need to be the administrator to do this.
- Also make sure you launch and run the browser as a Administrator.
- If both do not help, launch another browser as a Admin and try to install Cert again from Service Market Place and try again! Maybe it was installed by another user and you do not have rights to the same.
Regards
Bhavesh