Here we are discussing about how to export a server certificate in iis 8?.Main thing You should keep in you mind, while exporting the server certificate we should give the password for the protection. Once you forget that password you will not be able to use this certificate any more.
1) Open IISmanager -> goto RUN type inetmgr.
2) Double lick on the Server Certificate (ref.below given image).
3) Select a certificate and click Export from the Actions pane (ref.below given image).
4) In the Export Certificate dialogue box, give the following.
a. Type a file name in the Export to box OR browse the location and give the file name , where you want to store your Exported file
b.Type a password in the Password box if you want to associate a password with the exported certificate.
c.Retype the password in the Confirm password box and then click OK.
Click here to see How to generate self signed certificate ?