I was going on to a few websites that I normally go on every day for work. I never even had Sophos installed on my computer! It said, " An application is preventing Microsoft Edge from safely connecting to this site "Sophos" wasn’t installed properly on your computer or the network: Try uninstalling or turning off "Sophos" Try connecting to another network NET::ERR_CERT_AUTHORITY_INVALID" Like I said, I have never installed Sophos on my computer. I have tried all of the articles that it showed to uninstall it on my computer, but it isn't even in my app list. What is happening, and how can I fix this?

An application is preventing Microsoft Edge from safely connecting to this site “Sophos” didn’t install properly on your computer or network. Contact your organization to fix the issue. NET::ERR_CERT_AUTHORITY_INVALID

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Sophos is on my Computer, and I don't know why.

Raina Tenalite over 3 years ago

I was going on to a few websites that I normally go on every day for work. I never even had Sophos installed on my computer! It said,

" An application is preventing Microsoft Edge from safely connecting to this site

"Sophos" wasn’t installed properly on your computer or the network:

Try uninstalling or turning off "Sophos"
Try connecting to another network

NET::ERR_CERT_AUTHORITY_INVALID"

Like I said, I have never installed Sophos on my computer. I have tried all of the articles that it showed to uninstall it on my computer, but it isn't even in my app list. What is happening, and how can I fix this?

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Kyle Parrish over 3 years ago +2

Can you share a screenshot of the message?

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0 Kyle Parrish over 3 years ago

Can you share a screenshot of the message?
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0 Kyle Parrish over 3 years ago

Can you share a screenshot of the message?
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0 Administrator User472 over 3 years ago in reply to Kyle Parrish

An application is preventing Microsoft Edge from safely connecting to this site

“Sophos” didn’t install properly on your computer or network. Contact your organization to fix the issue.

NET::ERR_CERT_AUTHORITY_INVALID
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0 Administrator User472 over 3 years ago in reply to Administrator User472

Getting this error message on my network. any solution?
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0 Sophos User930 over 3 years ago in reply to Administrator User472

If Sophos isn't on your local computer is it upstream of it, i.e. a XG firewall doing MITM on SSL/TLS?

Looking at:
ssl_error_assistant.asciipb - Chromium Code Search

mitm_software {

name: "Sophos",

issuer_common_name_regex: "Sophos SSL CA_[A-Z0-9\-]+",

issuer_organization_regex: "Sophos"

}

mitm_software {

name: "Sophos",

issuer_common_name_regex: "Sophos_CA_[A-Z0-9]+"

}

It would suggest the browser is flagging Sophos in the message because the issuer of a cert matches the above regex.

I would probably either review the certificates being loaded in the Developer tools of the browser.

Maybe run Wireshark to see the certificates that are being exchanges to find one with a Sophos reference as per above.
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0 Administrator User472 over 3 years ago in reply to Sophos User930

we have Sophos intercept x is on local machines and XG210 on the network but not doing MITM on SSL/TLS
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