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Unable to log in at server

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Tereza Koubková
Tereza Koubková
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Hi, I have been using thunderbird with two accounts. One day one account decided that won't get new messages, so I deleted that account, tried to add it again and it is showing me mistake: Unable to log in at server. Probably wrong configuration, username or password. I am 100% sure, that all the credentials are correct. Could you please try to help me?

Hi, I have been using thunderbird with two accounts. One day one account decided that won't get new messages, so I deleted that account, tried to add it again and it is showing me mistake: Unable to log in at server. Probably wrong configuration, username or password. I am 100% sure, that all the credentials are correct. Could you please try to help me?

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