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Thunderbird error message reads "Login to account my.name@btinternet.com failed"

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Rob
Rob
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Thunderbird error message reads "Login to server mail.btinternet.com with username my.name@btinternet.com failed." After several prompts to Retry/Enter New Password/Cancel, I eventually receive another message "Server mail.btinternet.com has disconnected. The server may have gone down or there may be a network problem." Neither of these are true: I can access the server via webmail (using Firefox) with or without VPN, and my gmail and ionos email accounts are working so it isn't a network problem. I see that the problem has arisen for others, but the responses have all been archived. Any suggestions?

Thunderbird error message reads "Login to server mail.btinternet.com with username my.name@btinternet.com failed." After several prompts to Retry/Enter New Password/Cancel, I eventually receive another message "Server mail.btinternet.com has disconnected. The server may have gone down or there may be a network problem." Neither of these are true: I can access the server via webmail (using Firefox) with or without VPN, and my gmail and ionos email accounts are working so it isn't a network problem. I see that the problem has arisen for others, but the responses have all been archived. Any suggestions?

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Matt
Matt
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Ok, the first message says the login failed. After you refuse to accept that and keep trying the server basically hangs up on you "Server mail.btinternet.com has disconnected. The server may have gone down or there may be a network problem."

Your diagnostic that the web site works is of no help at all as web mail is a web page, not email as such. About as related as buying an airline ticket at the airport and buying one online. same end result but everything about getting there is different.

So lets look at the issue. BT are know to block access if they think your account is compromised, so are you not at home at the moment? Have you looked at the password stored in Thunderbird to make sure it is correct. Fundamentally sometime an old password is used and causes these issues. Do you have some security product scanning email. Some of them have password vaults which they happily supply old passwords from and cause these sort of issues.

What sort of BT account is it? My understanding is some BT mail accounts are with Yahoo from some years ago, others BT moved. But as I live half a world away, I am far from a BT expert.