John – This was a problem for me about a year ago – I was using W7 and FF then as well, but have since moved over to Chrome and W10. Kaspersky support gave me the solution that I’ve copied below. It should solve your problem, just replace the Kaspersky element with your own AV programme.
In case this issue occurs when using Firefox, please perform the following steps:
1) Please enable hidden files and folders display.
In Windows 7: http://windows.microsoft.com/en-gb/windows/show-hidden-files
2) Launch Firefox and click on the menu icon (the three-stripe symbol in the upper right corner) > Options > Advanced > Certificates > View Certificates > Authorities.
3) Find the Certificate “AO Kaspersky Lab. – Kaspersky Anti-Virus Personal Root Certificate”.
If found once: Click on the second line of the entry and delete it by clicking “Delete or Distrust”.
If found several times: Delete all entries.
If there is no entry, proceed with step 4.
4. Close all of your browsers // Important Step //
5. Open up Kaspersky. From the left hand corner, please click on the Gear Icon for Settings.
6. From the left hand list, please select ADDITIONAL
7. From the right hand list, please click on NETWORK
8. Under the “Encrypted Connections Scanning” please select “Advanced Settings”
9. Click on the Button INSTALL CERTIFICATE. Proceed with the Instructions, click on NEXT.
https connections should no longer be interrupted now.
It worked for me. :good:
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