Avast Free Antivirus: 18.1.2326 (build 18.1.3800.0)
Internet Explorer 11 (Windows 7): when accessing an https secure website, the page loads correctly, without issues. However, the sercure websocket (wss://) connection that the browser attempts to do to the same secure host.domain (different port) fails with this error:
"SCRIPT12057: WebSocket Error: Network Error 12057, It was not possible to connect to the revocation server or a definitive response could not be obtained."
Webshield has "Enable HTTPS Scanning" enabled. When I disabled it, the secure websocket connection works fine.
On another PC I have with Windows 7 and IE11, this problem doesn't exist, the page loads and the wss connection is successful.
I noticed one difference between the SSL certificates shown on the PCs:
* when viewing the certificate for the site on the PC that connects to wss, the certificate path shows: Avast Web/Mail Shield Root -> *.google.com -> secure.domain
* but on the PC that doesn't connect to wss, the certificate path shows: Avast Web/Mail Shield Root -> secure.domain
(it's missing the *.google.com step)
Note: the PC where the connection to wss doesn't work had Avast installed for many years, and updated. I removed it with the 'clear' app from Avast and reinstalled the latest version today, but the problem persists. On the PC where wss works, I have installed Avast today for the first time.
Chrome doesn't show this problem, nor do other antiviruses on IE11 (tested on 2 other PCs with other AV brands).
Is there a way to reinstall or flush the certificates? Or any other way to address this issue without having to turn off https scanning?
