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Getting TLS error - can't send or receive - gmail, outlook, yahoo - all bad

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boliche.elresorte
boliche.elresorte
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I have switched to work remotely and have transferred all my Thunderbird settings from my PC to my laptop.

I got to my new remote work place and can't receive any emails using my accounts set up in Thunderbird.

It is the same whether I use Gmail, Outlook or Yahoo.

I have tried many things but basically have taken all defaults for setting up email accounts. I am using Windows 11 Home and I am not going through a VPN. My Thunderbird version is 115.3.3 (64-bit)

For example for Gmail I get:

Non-overridable TLS error occurred. Handshake error or probably the TLS version or certificate used by server imap.gmail.com is incompatible.

You can see a screen print here: https://imgur.com/a/KDHtSP9

Am I doing something wrong?

I have switched to work remotely and have transferred all my Thunderbird settings from my PC to my laptop. I got to my new remote work place and can't receive any emails using my accounts set up in Thunderbird. It is the same whether I use Gmail, Outlook or Yahoo. I have tried many things but basically have taken all defaults for setting up email accounts. I am using Windows 11 Home and I am not going through a VPN. My Thunderbird version is 115.3.3 (64-bit) For example for Gmail I get: Non-overridable TLS error occurred. Handshake error or probably the TLS version or certificate used by server imap.gmail.com is incompatible. You can see a screen print here: https://imgur.com/a/KDHtSP9 Am I doing something wrong?

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Matt
Matt
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It is more likely your antivirus is doing something wrong. Most antivirus products that implement mail scanning (something I consider a waste of time) issue self signed encryption certificates which are not trusted by Thunderbird. Most of these companies have instruction on how to manually add their untrusted certificates to the Thunderbird store. But you in doing so vouvh for the validity of the certificate, something Thunderbird can not verify because the certificates are not in the chain of trust TLS relies upon.