View / install certificates for local machine store on Windows 7

Start mmc.exe (as administrator), menu File -> Add/Remove Snap-in.., select "Certificates", press Add, select radio button "Computer account", press Finish and OK.

certlm.msc (Win8/2012 and above) will open the local machine's certificate store in the same GUI style as certmgr.msc.

Install the certificate for all users:

1. First save the certificate in a file
2. Run MMC
3. Open the Certificate Manager (certmgr.msc in C:\Windows\System32)
4. You will see it opens 'Certificates - Current User'
5. In the menu, choose File, Add/Remove Snap-In
   • Now press Add, select 'Certificates' and select 'Computer Account'
   • Select the Local Computer
   • Now you have two snap-ins:
     • Certificates - Current User
     • Certificates (Local Computer)
6. Now import the certificate in "Certificates (Local Computer)\Trusted Root Certificates\Certificates""Certificates (Local Computer)\Trusted Root Certificates\Certificates"

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• Performing this task using the Certificate Manager on the local machine.
  • Launch mmc.exe, if a User Account Control prompt is displayed, click Yes.
• Add the Certificate Management snap-in. Click File, Add/Remove Snap-in…, Certificates. Click Add, click Computer account, Next.
• Retain “Local computer” selection,
  • => Finish, OK.