How to understand which program is blocking websites?

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mech-eng
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I have two different security tool: One is panda for antivirus and the other is Zonealarm as firewall. Now even my yahoo searches are being blocked by now. How can I understand which one or what program is blocking them? I checked the settings of Panda but I didn't see such configurations. Before I used Zonealarm with another antivirus there was no such a problem.

Thank you.
 
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mech-eng said:
I have two different security tool: One is panda for antivirus and the other is Zonealarm as firewall. Now even my yahoo searches are being blocked by now. How can I understand which one or what program is blocking them? I checked the settings of Panda but I didn't see such configurations. Before I used Zonealarm with another antivirus there was no such a problem.

Thank you.
What browser are you using? It could be a browser issue, you know. Mozilla has recently gotten stricter about certificates.
 
phinds said:
What browser are you using? It could be a browser issue, you know. Mozilla has recently gotten stricter about certificates.

Chrome. I cannot fix the problem at all. The case is even more strange. I disabled both antivirus and firewall but the problem was still lasting. Then I tried a reboot. But nothing has changed. I read notifications given by browser. They are saying check your proxy settings. Even I cannot access the sites I accessed yesterday -a very strange case.

What should I do now?

Thank you.
 
phinds said:
Do you perhaps have a built-in Windows firewall running that you are not aware of?

I don't think but how can I check to be completely sure?

Thank you.