Форум поддержки Thunderbird

Since the UI upgrade, my Thunderbird client has become slow on my PC. On opening instead of what was previously a quick start-up to my INBOX, it now hangs and you can see (from bottom left) its polling out to email servers and waiting for a response .... much slower than previously.

It's not a server response as I use same email on my iPad and that logs in with almost zero delay.

Occasionally also lags behind key board, you are typing and you are several characters or even words in front of the client.

Is there any rebuild or similar I should do now I am on the 'new look'

I would reinstall Thunderbird to see if that fixed the problem. However, I am afraid of loosing data.

The installation has 3 email accounts and two of them are not allowing a logon and one is missing its control block.

Latest Thunderbird update 115.5.2 on my Windows 11 laptop has completely slowed the computer down and keeps opening the 'Help Keep Thunderbird Alive' webpage when I launch Firefox.