Have you tried opening Webmail using the same password?
Does this work and if you are sure it's the same youve been trying, delete reference to the e-mail in outlook, then close the programme. Open and try re-adding the email using the recommended settings for IMAP and hopefully it will take this time.
https://help-centre.talktalk.co.uk/Email/Set_up_TalkTalk_email/Email_settings_to_access_TalkTalk_ema...
Unfortunately staff here cannot offer advice on third party programmes only Webmail, but hope the above helps.
Outlook is doing some funny things at the moment but deleting and re-adding the account seems to work.
From the 29th of March our TalkTalk Community will move to peer-to-peer support and the TalkTalk team will no longer be here to support with queries. Don’t worry we still have plenty of ways to reach out if you need to speak to TalkTalk directly. For more details check out the link here:
How to contact TalkTalk Broadband - Help & Support.
