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For one particular website, I am getting the Untrusted Connection message, and it does not allow exception, and keeps bringing me back with a specific error cod

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DMV88
DMV88
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An art website I visit keeps giving me the Untrusted Connection message. When I click I understand the risks, and click Add Exception and then click Confirm Exception, it just brings me back to the Untrusted Connection message and alert. On another browser the website loads, but on Firefox it keeps giving me this message. For details, it tells me the error is Error code: sec_error_cert_signature_algorithm_disabled so I am unsure what this means, I am not a computer knowledgeable person, but it is highly annoying to be unable to go to a website I normally go too all the time.

An art website I visit keeps giving me the Untrusted Connection message. When I click I understand the risks, and click Add Exception and then click Confirm Exception, it just brings me back to the Untrusted Connection message and alert. On another browser the website loads, but on Firefox it keeps giving me this message. For details, it tells me the error is Error code: sec_error_cert_signature_algorithm_disabled so I am unsure what this means, I am not a computer knowledgeable person, but it is highly annoying to be unable to go to a website I normally go too all the time.

Soluție aleasă

You can see in the second screenshot that the certificate is issued by your Avast security software.

You can disable HTTPS scanning in Avast Web Shield. 

Open the Avast dashboard on the affected system.
Select Settings from the left sidebar menu.
Switch to Active Protection.
Click on Customize next to Web Shield.
Uncheck the "Enable HTTPS Scanning" option and click ok.
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DMV88
DMV88 Deținătorul întrebării
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Here are images of the messages I am getting

cor-el
cor-el
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Soluție aleasă

You can see in the second screenshot that the certificate is issued by your Avast security software.

You can disable HTTPS scanning in Avast Web Shield. 

Open the Avast dashboard on the affected system.
Select Settings from the left sidebar menu.
Switch to Active Protection.
Click on Customize next to Web Shield.
Uncheck the "Enable HTTPS Scanning" option and click ok.
DMV88
DMV88 Deținătorul întrebării
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That fixed it, I was worried it was something else since this never happened before and I always use Avast. Thank you for the information.