Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

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Secure connection failed after install (MacBook Pro M1)

kenoc01

After installation, every interaction with the internet comes a message "Secure connection failed". It is a fresh install. Embedding Gmail has worked. But I can not add for example new languages or addons.

After installation, every interaction with the internet comes a message "Secure connection failed". It is a fresh install. Embedding Gmail has worked. But I can not add for example new languages or addons.
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I can open the Add-ons site from within TB with no errors on W10, so I suspect there's some external app blocking the connection. Do you have an antivirus that scans secure connections? They are well-known to interfere. Also, but less likely, connection issues sometimes arise on OS X unless the setting in Preferences/General/Network & Disk Space, Connection is 'No proxy'.

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Click 'Or you can add an exception', but don't actually create an exception (yet). Is there any specific error code? If so, please post a screenshot of the error.

Then inspect the certificate - see attached screenshot for instructions.

Whos's the issuer of the cert, and what's the cert's validity dates? Please post a screenshot of the certificate viewer window with the above information visible.

many thanks for the quick response. when i click the link, nothing happens. no window opens and I am not forwarded.

選ばれた解決策

I can open the Add-ons site from within TB with no errors on W10, so I suspect there's some external app blocking the connection. Do you have an antivirus that scans secure connections? They are well-known to interfere. Also, but less likely, connection issues sometimes arise on OS X unless the setting in Preferences/General/Network & Disk Space, Connection is 'No proxy'.

This solved my problem:

"Preferences/General/Network & Disk Space, Connection is 'No proxy'"

Many thanks for the help!