It may so happen that you will start receiving the following error message:
Task ‘Synchronizing subscribed folders for firstname.lastname@example.org.’ reported error (0x800CCC0E) : ‘Outlook cannot synchronize subscribed folders for email@example.com. Error: Cannot connect to the server. If you continue to receive this message, contact your server administrator or Internet service provider (ISP).’
During this error, you will not be able to use your Microsoft Outlook email on Windows. This error will only be limited to your outlook account, but when it comes to your web system, it will work just fine and will open up your mail account without any error. For BT Broadband as your email and internet provider, it is suggested that in such a case you do not change your password, delete your account or reinstate them at all under any circumstance. It is because the fault is not caused by your username or your password, so changing them will not really solve anything.
This is because if you can access your account via webmail after previously having logged out of your account, it clearly implies that the password and username are correct, so changing them is pointless and will not really change anything. So Outlook will not really start with this change.
You should change your password only when you have made sure that the other devices you use are not checking for your mail and then try your previous passwords in Outlook itself. Also, this time when you do change the password for your account, you should wait for a minimum of fifteen minutes before you start to check via webmail access. If you do this and can gain access, then you can change your outlook password. Sometimes, the password you use for your outlook gets corrupted and the only solution for that is to delete the account. However, you do not to do that as yet.
Since the account you use has been reinstated in Outlook, you should make sure that all of your settings are accurate. This is because getting the odd character incorrect, ticking the incorrect options ang getting the port numbers wrong is not hard at all