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Problem with SSL certificate zotero.org using Ubuntu 18.04 after upgrade from 16.04

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When I try to open zotero.org page I get an error

Your connection is not secure

The owner of www.zotero.org has configured their website improperly. To protect your information from being stolen, Firefox has not connected to this website.

This site uses HTTP Strict Transport Security (HSTS) to specify that Firefox may only connect to it securely. As a result, it is not possible to add an exception for this certificate.

Learn more…

Report errors like this to help Mozilla identify and block malicious sites

www.zotero.org uses an invalid security certificate.

The certificate is only valid for *.api.mandae.com.br.

Error code: SSL_ERROR_BAD_CERT_DOMAIN

I have no clue how to solve it. I already reinstalled SSL certificates and removed certX.db files from profile folder of firefox.

When I try to open zotero.org page I get an error Your connection is not secure The owner of www.zotero.org has configured their website improperly. To protect your information from being stolen, Firefox has not connected to this website. This site uses HTTP Strict Transport Security (HSTS) to specify that Firefox may only connect to it securely. As a result, it is not possible to add an exception for this certificate. Learn more… Report errors like this to help Mozilla identify and block malicious sites www.zotero.org uses an invalid security certificate. The certificate is only valid for *.api.mandae.com.br. Error code: SSL_ERROR_BAD_CERT_DOMAIN I have no clue how to solve it. I already reinstalled SSL certificates and removed certX.db files from profile folder of firefox.

Избрано решение

When routers behave strangely, sometimes it is best to unplug them for 30 seconds and then plug them back in to get a (hopefully) clean start.

Or do you use a VPN?

Прочетете този отговор в контекста 👍 1

Всички отговори (6)

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Hmm, I don't get that in California.

Does the company Mandaê Servicios de Consultoria em Logística S / A (https://www.mandae.com.br/) have any reason to be involved in your internet connection?

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Nope. I live in France and should not have any connection with this company. I have this same error on two computers with Linux and Windows. Can it be connected with configuration of my network, i.e., router ? This starts to be very mysterious.

Променено на от mjjank

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Избрано решение

When routers behave strangely, sometimes it is best to unplug them for 30 seconds and then plug them back in to get a (hopefully) clean start.

Or do you use a VPN?

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Thanks, rebooting router helped. I'm curious what has caused this problem.

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Possibly your service provider information (e.g., DNS servers) got corrupted in the router, but hopefully not by an attacker.