Question: how to install a pfx certificate?
Answer: Click Start > Run.
Type in MMC and click OK.
Go into the File Tab (or Console) > select Add/Remove Snap-in.
Click Add > Click Certificates and click Add, then click close.
Click OK (in the Add/Remove Snap-in window)
Select Computer Account.
Select Local Computer.
Click the + to expand the Certificates console tree.