TB slow to download emails, now locks up when I click to open one
Other than being slow to download my emails now for a few months, TB was performing well until a week or so ago. Now it also won't open the downloaded email when I click on it and the TB freezes up so I can't close it out. I have tried restarting computer multiple times and it works for one or two emails that I can open and then starts freezing up again. Makes using it almost impossible. I have security Windows 11 Defender only and have had it the entire time when it also worked well.
All Replies (9)
Try to start Windows 11 in safe mode with networking enabled.
Does the problem go away?
Windows safe mode disables anti-virus software. This is a troubleshooting step, not a solution.
I followed the steps to start Windows 11 in safe mode with networking enabled. I opened in Safe Mode with Networking enabled, then I opened Thunderbird, but I got messages that "Failed to connect to the server Microsoft 365". It would do nothing beyond that, not even close Thunderbird so I had to restart the computer to close out TB. I retried TB but same problem persists. Ann
Do you have a wired connection to the internet? Networking with safe mode requires a wired connection. WiFi does not work.
No I am not wired to the internet. Uses wifi. But nice to have an explanation. TB is working better today, not perfect, but better than the last couple of days.
Try to create an exclusion in Defender for the Thunderbird profile folder, so that it's real-time scanner will not scan it. https://support.mozilla.org/en-US/kb/profiles-where-thunderbird-stores-user-data#w_how-to-find-your-profile
I located and opened the profile TB folder. I found no info on creating an exclusion for a Defender scan. Then I opened Defender and found where I could select a folder for exclusion. I selected folder for exclusion. It brought up a list of folders but not the TB profile folder. I could find nothing for TB. How can I get the TB profile folder to be recognized by Defender in order to exclude it? Thanks
Add the Thunderbird profile folder to the Defender list of exclusions. https://www.youtube.com/watch?v=WCzRJLeSGJg
Until today, I have been delayed in making TB profile folder a Defender Exclusion. Today I was able to exclude it. I verified in Exclusions it is listed, but that does not solve the problem of TB freezing up when I am using it. It works fine for a short time, then it freezes up for anywhere from 5 to 30 minutes, and my hard drive makes a whirring sound until the freezing stops. TB is becoming unusable. Where do I go next?
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