Uninstall the SSL CA certificate

Disclaimer: This information is provided as-is for the benefit of the Community. Please contact Sophos Professional Services if you require assistance with your specific environment.

Overview

This article contains the steps to uninstall SSL CA Certificate from the browser and the computer. This is required if a different certificate is installed or if the certificate is incorrectly configured.

Applies to the following Sophos products and versions:
Sophos Firewall

Untrusting and uninstalling the certificate

1. Untrust the certificate from the browser.
   
   Microsoft Edge
   
   
   1. Open the menu bar  and click Settings  
   2. Go to Privacy, search and services > Scroll down to Security
   3. Click Manage Certificates
   4. Click Remove to untrust Security Appliance SSL CA.
   
   Firefox
   
   
   1. From the Firefox Menu bar, click Settings
   2. Click Privacy and Security
   3. Scroll down to Certificates and open View Certificates
   4. Click Delete or Distrust to untrust Security Appliance SSL CA.
   
   Google Chrome
   
   
   1. Enter chrome://settings/security in the address bar and click Enter.
   2. Click Privacy and Security>Security.
   3. Scroll down to Advanced and open Manage Certificates
   4. Click Remove to untrust Security Appliance SSL CA.
   
   Safari
   
   
   1. Go to Application>Utilities>Keychain Access
   2. Select the login keychain, and then select My Certificates from the list in the lower pane.
   3. Click Delete Security Appliance SSL CA.

2. Delete the certificate from the computer.

1. Open Run.
2. Enter mmc and click OK.
3. Click File > Add/Remove Snap-in.
4. Select Certificates and click Add.
5. Select Computer account > Click Next > Click Finish.
6. Close the list of snap-ins.
7. Click OK to add the certificate snap-in.
8. Select Security Appliance SSL CA in Certificates (Local Computer) > Trusted Root Certification Authorities > Certificates.  
9. Right-click Security Appliance SSL CA and click Delete to remove the Certificate from the Trusted Root Authority Container.

Sign up to the Sophos Support Notification Service to get the latest product release information and critical issues.