For the past couple of months, every time I boot up my computer and launch Thunderbird I get the attached error messages for each of my email accounts (2 Hotmail and one Outlook) Repeatedly clicking "retry" often results in success but sometimes I get the second message indicating the server has disconnected. Usually, after a few minutes things settle down, the messages come through and all is well but it is a nuisance. I would switch to using Outlook but it cannot send multiple emails which I periodically need to do and I don't want to encourage Microsoft's near monopoly of computer technology. I have tried accepting coookies as advised elsewhere in here and tried turning on O Oath as my authentication method but this just got me another error message saying this authentication "was not supported on this platform" (whatever that means??) Anyway, I reverted to using "simple password" which does eventually work. I looked at 2 factor authentication but that proved to be impossible to understand and, in any case, I rarely carry a 'phone with me and do not want to clutter my 'phone up with more apps. I use 2 factor authentication on a lot of my confidential accounts and none of these were as complicated to set up as this one and certainly did not invole scanning QR codes and installing special apps. Will this bug be fixed by more updates to Thunderbird or is there some other way of solving this problem.