1. Go/login to the Server in which the existing certificate to be re-used has been installed.
2. Start > Run > MMC or Windows Key + R then type mmc
   
3. In the Console Tab click File > Add/Remove Snap-in
   
4. Click on Certificates > Add
   
5. Choose Computer Account and then click Next
   
6. Click Local Computer > Finish
   
7. Click OK
   
8. In MMC, navigate through to Console Root > Certificates (Local Computer) > Personal > Certificates and locate your certificate and double click it
   
9. In the next window Click on the Details tab > scroll down to the Thumbprint Field > Copy the value
   
10. Paste the value into Synergy Administration and click Set
    
11. Restart the 12d Synergy server service by Start > Run > services.msc or Windows Key + R then type services.msc