Raritan Computer Home Security System - Manual (Page 355)

Appendix F: Troubleshooting
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If you access more than one CC-SG unit using the same client and
Firefox, you may see a "Secure Connection Failed" message that
says you have an invalid certificate. You can resume access by
clearing the invalid certificate from your browser.
a. In Firefox, choose Tools > Options.
b. Click Advanced.
c. Click the Encryption tab.
d. Click View Certificates and find "Raritan" in the list.
e. Select the CommandCenter item and click Delete. Click OK to
confirm.