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Can't authenticate to Gmail account

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  • Last reply by Mathieu

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When adding a new Gmail account to Thunderbird, a popup Window appears prompting me to authorize Thunderbird to access my Google account. When I click Authorize, I get a Secure connection error SSL_ERROR_INTERNAL_ERROR_ALERT. The URL at the top of the popup window begins with https://localhost?code=... In Thunderbird, cookies and Javascript are enabled. Previously, Gmail account have been correctly configured.

When adding a new Gmail account to Thunderbird, a popup Window appears prompting me to authorize Thunderbird to access my Google account. When I click Authorize, I get a Secure connection error SSL_ERROR_INTERNAL_ERROR_ALERT. The URL at the top of the popup window begins with https://localhost?code=... In Thunderbird, cookies and Javascript are enabled. Previously, Gmail account have been correctly configured.

Chosen solution

Thanks for the reply. I have Caddy installed, which manages certs. Shutting down Caddy before authentication solved the problem.

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What antivirus are you using? My initial guess is that is probably the cause as they scan encrypted traffic (https) using self signed certificates and man in the middle hacking techniques. Thunderbird does not recognize the self signed certificates as they are not a part of the global chain of trust, so things die out real quickly when the AV gets into the picture.

Try disabling it while you try again. The local host is essential to the process. I asked before and there is no alternative for the initial authorization, but that is the only time it is used.

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Chosen Solution

Thanks for the reply. I have Caddy installed, which manages certs. Shutting down Caddy before authentication solved the problem.