Installing Sophos Certificates

Installing Sophos Certificates

Date Updated: 18/7/25
Applies to: Windows 10

Install Sophos Certificates on Windows 10 Devices

1) Download the Sophos Certificates .zip file provided by a Protek agent. Right-click the file, and extract its contents.



2) Right-click the 'Default' certificate, and select Install Certificate.



3) In the Certificate Import Wizard, on the 'Welcome to the Certificate Import Wizard' window, select the Local Machine radio button. Click Next, and when prompted, enter local administrator credentials.



4) On the 'Certificate Store' window, select the Browse... radio button, and choose 'Trusted Root Certification Authorities'. Click Next.



5) On the 'Completing the Certificate Import Wizard' window, ensure the settings are configured as shown below, then click Finish. Click Accept when warned that you are installing a certificate. 



6) In the Certificate Import Wizard popup window, click OK. 

7) Repeat Steps 2-6 with the second certificate, 'SecurityAppliance_SSL_CA'. Note the exact name of this certificate may differ; it may include elements of your site name, or DFES number.

8) Enter 'Computer certificates' into the Start Bar, and open the Manage computer certificates control panel. If prompted, allow Microsoft Management Console to make changes to your device by clicking Yes in the popup menu. 
 

 9) In the Computer Certificates MMC window, navigate to Trusted Root Certification Authorities > Certificates. Scroll down the list of installed certificates, and look for the certificates 'Sophos_SSL CA_<characters>' and 'Sophos_CA <characters>'. If both of these certificates are present, you have successfully installed the Sophos certificates.
  



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