Download KFUPM root certificate from here.
Right click the downloaded file. And chose from the menu "Install Certificate".
 Press Next button to start install the certificate in your system.
Select 'Automatically select the certificate store based on the type of certificate' option and then press Next button.
Press Finish to complete the certificate installation process.
Press Yes to confirm the certificate installation process.
Press OK to finish the Certificate Import Wizard.
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