Adding Root and Intermediate certificates via MMC
Files to have on hand: Root and Intermediates.
If you’re unsure which to get or which is which, please visit: Which is Root? Which is Intermediate?
Root and Intermediate Certificate installation via MMC
1. Open up the Microsoft Management Console (MMC)
Start -> Run -> Type “mmc” (without quotes) and Click ‘OK’ or hit Enter on your keyboard.
2. Open ‘Add/Remove Snap-in’ Window
File -> Add/Remove Snap-in
3. Add the Certificates Snap-in
Click ‘Add’ then double-click ‘Certificates’
4. Select ‘Computer Account’ and click ‘Next’
Note: This step is very important. It must be the ‘Computer Account’ and no other account
5. Select ‘Local Computer’ and click ‘Finish’
6. Close the ‘Add Standalone Snap-in’ window and click ‘OK’ in the ‘Add/Remove Snap-in’ Window.
7. Will now be returned to the MMC.
Install/Import the Root and Intermediates Certificate
1. Expand the Certificates section by clicking on the plus (+) sign and turn it to a minus (-)
sign to expose the ‘Certificates’ tree.
2. Import the Root Certificate.
Right-click on ‘Trusted Root Certification Authorities’, select ‘All Tasks’, then select ‘Import’.
Locate the Root Certificate and click Next.
When the wizard is completed, click Finish.
3. Import Intermediate(s)
The process is the exact same except the area of interest is ‘Intermediate Certification.
Authorities’ instead of ‘Trust Root Certificate Authorities’ and the file(s) that are to be imported are the remaining files outside of your domain certificate.
4. Restart Website through IIS.
Note: If you’re page is still showing certificate errors, one may have to stop and start the website or even the IIS Service itself. If this fails one may have to restart the server itself. Do keep in mind that rebooting the server is to be used as a last resort. Please contact support if you require further assistance.