How to import Certificate Authority in Windows 10

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How to download Computerisms Certificate Authority

  • Open your preferred browser and navigate to:
        http://help.computerisms.ca
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  • Scroll down and Click on "The Certificate Warnings Issue"
  • Under the FAQ section right click on the first link and click on "Save Link As"


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  • Save the file on your Desktop
    • Note: you can save the file anywhere you wish but this tutorial assumed that you saved it on your Desktop

How to install Computerisms Certificate Authority into your Windows 10 Operation System


  • Click on the Windows Start menu


  • Search for certmgr.msc and press Enter
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  • Right click on the Trusted Root Certification Authorities


  • Place your mouse cursor on the All Tasks tab and click on Import
  • Click on the Next button in the Certificate Import Wizard
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  • Click on Browse button in the Certificate Import Wizard
  • Step 1: Navigate to your Desktop


  • Step 2: Change the drop down menu to "All files"


  • Step 3: Select the Certificate from Desktop and than click on open
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  • Click on the Next button in the Certificate Import Wizard
  • Make sure that the "Place all certificates in the following store" is checked and the "Certificate store" is "Trusted Root Certification Authorities"
  • Click Next and than click on Finished
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  • The pop up message should say "The import was successful."

How to install Computerisms Certificate Authority into your Firefox Web Browser

  • To add the certificate to Firefox, start by opening Firefox


  • Click on the top right menu bar (looks like 3 horizontal lines)


  • Click on Options
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  • Step 1: Click on Advance in the left menu bar


  • Step 2: Select the Certificates tab in the top menu bar


  • Step 3: Click on View Certificates
  • Click the Authorities section tab


  • Click the Import button
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  • Navigate to the Desktop and select the file named Computerisms.Root.Certificate.pem


  • Click on open
  • Check all the options and click on OK


  • Note that the last option, "Trust this certificate for identifying software makers", is not required. You may leave this unchecked, but the other 2 options are required.
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How to install Computerisms Certificate Authority into your Thunderbird mail client

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  • To add the certificate to Firefox, start by opening Firefox


  • Click on the top right menu bar (looks like 3 horizontal lines)


  • Click on Options
  • Step 1: Click on Advance in the left menu bar


  • Step 2: Select the Certificates tab in the top menu bar


  • Step 3: Click on View Certificates
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  • Click the Authorities section tab


  • Click the Import button
  • Navigate to the Desktop and select the file named Computerisms.Root.Certificate.pem


  • Click on open
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  • Check all the options and click on OK


  • Note that the last option, "Trust this certificate for identifying software makers", is not required. You may leave this unchecked, but the other 2 options are required.