Why is my Firefox browser not working?
When Firefox connects to a secure website (the URL begins with "https://"), it must verify that the certificate presented by the website is valid. If the certificate cannot be validated, Firefox will stop the connection to the website and show the following error message:
In order to fix this issue, you must install the NetSpark security certificate in the Firefox browser:
1. Open the Firefox browser on your device and enter the following link: netm.co.il/crt
2. Press the orange button "Press here to install".
3. Check the 3 check-boxes, press "OK" and install the security certificate.
4. The certificate is now installed and Firefox will work properly. Refresh the web page and the following message will appear: