how to fix your connection is not secure firefox

how to fix your connection is not secure firefox

1. disable  ADFENDER SOFTWARE

2. disable Avast

ok, so please try to disable https scanning within avast which is known to cause various problems:

1. Open the Avast dashboard on the affected system.
2. Select Settings from the left sidebar menu.
3. Switch to Active Protection.
4. Click on Customize next to Web Shield.
5. Uncheck the "Enable HTTPS Scanning" option and click ok.