"message filing feature": I don't know what that is - filters you set up yourself?. Can you explain in detail the steps you used to take to file a message? Presuming you mean moving messages to particular folders.

Ed and everyone else,

I found the missing menu bar!I don't know why it went away during the upgrade, but I finally found it and restored it. I had looked at toolbars once, but failed to try that one.

For Ed, Yes, I file into folders The menu bar has the word Message and when you click that it gives you options. One of them is Move To. I realized tonight that I couldn't even forward an email, so I looked again. The Forward function is also under Message as is Edit Message as New which I also use frequently. Anyhow, thanks Ed for your response.

The filing issue is solved, but the distressing issue of Thunderbird not learning what does NOT go in Junk remains. I have been using Shift-J for months, but Thunderbird does not learn.

Sounds like you are using an addon.

https://addons.thunderbird.net/en-US/thunderbird/addon/addon-compatibility-check/ will help understand when an addon is compatible in future versions.

Ed and everyone else, The filing issue is solved, but the distressing issue of Thunderbird not learning what does NOT go in Junk remains. I have been using Shift-J for months, but Thunderbird does not learn.

If you haven't been marking a few good messages as not junk every week, try that. If that doesn't help, go to TB menu > Settings > Privacy & Security > Junk and click the 'Reset Training Data' button.

Wayne Mery: I am not using an addon. The filing issue has been resolved.

Ed: Thanks for the suggestions on Junk. I can try tomorrow.

Wayne Mery: I am not using an addon. The filing issue has been resolved. Ed: Thanks for the suggestions on Junk. I can try tomorrow.

Forgot to give you Thunderbird and Junk / Spam Messages. Also BTW, you can R. click a message and get the same choices as Menu Bar/Message. Less mouse movement :-)