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Web Filter does not work in Chrome but works in Edge

On a Windows 11 Home computer (fresh clean OS install), the web filter does not work in Chrome. I'm testing it by going to http://sophostest.com/adult/index.html in Chrome and the page does not get blocked. It DOES get blocked in Edge, just not Chrome. I've rebooted the computer, uninstalled and reinstalled Sophos, no luck. Again, this is a freshly installed Windows 11 Home install from scratch. I know the policy settings are correct in Sophos Central because the page is blocked in Edge. Any suggestions on how to get the web filter to work in Chrome?

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BBallLAL over 2 years ago in reply to wit128bdolar +1

It's a little deeper than that but thanks. This happens after a fresh OS install and a fresh Chrome install.

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0 Qoosh over 2 years ago

Hi BBallLAL,

Thanks for reaching out to the Sophos Community.

I can replicate the same behaviour on my side when using a test VM. There looks to be a difference in the way that Chrome and Firefox handle new web connections. I will contact our team to further investigate this issue and update you here.

Kushal Lakhan

Team Lead, Global Community Support
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0 BBallLAL over 2 years ago in reply to Qoosh

Thanks, it doesn't seem to be across the board though. My work computer has Windows 11 Pro and sophostest.com/.../index.html does get blocked in Chrome. Do you have an idea of what environments the web filter doesn't work in Chrome?
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0 Qoosh over 2 years ago in reply to BBallLAL

I don't believe this is due to the web filter not working. When browsing to a different site with the same blocked category assigned, I get a block message displayed correctly.

I believe what's happening is that in some cases, a TLS handshake takes place when establishing a new connection to the site, and other times this does not occur since the same top-level domain is still being accessed.

As far as I can see, this behaviour is specific to the sophostest website, though if you are able to replicate this with other websites, please do let me know.

Kushal Lakhan

Team Lead, Global Community Support
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0 Qoosh over 2 years ago in reply to BBallLAL

I don't believe this is due to the web filter not working. When browsing to a different site with the same blocked category assigned, I get a block message displayed correctly.

I believe what's happening is that in some cases, a TLS handshake takes place when establishing a new connection to the site, and other times this does not occur since the same top-level domain is still being accessed.

As far as I can see, this behaviour is specific to the sophostest website, though if you are able to replicate this with other websites, please do let me know.

Kushal Lakhan

Team Lead, Global Community Support
Connect with Sophos Support, get alerted, and be informed.
If a post solves your question, please use the "Verify Answer" button.

The New Home of Sophos Support Videos! - Visit Sophos Techvids
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