Hi, thanks for your help in advance. My Thunderbird keeps stalling every time it checks the Hotmail messages. The "thinking" wheel keeps coming up and it freezes for the duration of the process of checking the Hotmail account for new messages. This didn't happen before, and it doesn't happen with other email accounts (gmail or others). I believe it started with the last 2 updates or so. I am using a Macbook Pro 16'', 2019, 2,3 Ghz, i9, 16Gb, and TB 102.3.3 I look forward to your suggestions to solving this issue since it interferes with my workflow every time I have to wait for TB to unfreeze after it finishes checking the Hotmail account. Thanks again. Best. Nacho.