i am getting the following error message. The websites work on other browsers. I have cleared data and history and removed AVG free anti virus. Firefox just will not connect. i am a novice so any help would be appreciated.
Secure Connection Failed
An error occurred during a connection to ustreamix.su. A required TLS feature is missing. Error code: MOZILLA_PKIX_ERROR_REQUIRED_TLS_FEATURE_MISSING
The page you are trying to view cannot be shown because the authenticity of the received data could not be verified. Please contact the web site owners to inform them of this problem.
Report errors like this to help Mozilla identify and block malicious sites
I tried one of the links and I got;
Category: Intrusion Prevention Date & Time,Risk,Activity,Status,Recommended Action,IPS Alert Name,Default Action,Action Taken,Attacking Computer,Destination Address,Source Address,Traffic Description
6/6/2019 7:55:36 AM,Medium,An intrusion attempt by deloplen.com was blocked.,Blocked,No Action Required,Malicious Site: Malicious Domain Request 22,No Action Required,No Action Required,"deloplen.com (18.104.22.168, 443)","FRED-PC (10.10.40.14, 56968)",deloplen.com (22.214.171.124),"TCP, https"
Network traffic from deloplen.com matches the signature of a known attack. The attack was resulted from \DEVICE\HARDDISKVOLUME3\PROGRAM FILES\MOZILLA FIREFOX 54\FIREFOX.EXE. To stop being notified for this type of traffic, in the Actions panel, click Stop Notifying Me.
Thank you so much for taking the time to look at this. I have a follow up question on this matter given your response.
Does this mean that my computer is infected and if it is how do I find and remove problem?
Your help is very much appreciated as I am not sure what to do.
Does this mean that my computer is infected
I don't know. Further information can be found in this article; https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-caused-malware?cache=no
Run most or all of the listed malware scanners. Each works differently. If one program misses something, another may pick it up.
This could be a problem with OCSP stapling.
Try to disable OCSP Stapling temporarily by toggling this pref to false on the about:config page to see if that has effect.
- security.ssl.enable_ocsp_stapling = false
You can open the about:config page via the location/address bar. You can accept the warning and click "I accept the risk!" to continue.
It is best to reset this pref via the right-click context menu to true once you are done with accessing an affected website since this is a security feature.