There are tens of millions of users on version 91 successfully using Thunderbird including zoho users. So although you are having difficulty, I doubt this is a widespread issue.

This investigation should really continue in your original topic https://support.mozilla.org/en-US/questions/1350427

I've been trying to continue with my original topic; I am watching it, but there was only one responder on that topic and he asked me to provide information that I have no idea of how to get, and I said so. He implied that my problem was with my internet provider (Zoho.com), even though I had the same (Thunderbird) issues with email from a second email provider: Gmail. I have used both those email providers via Thunderbird for years.

Meanwhile, my Thunderbird has gotten even worse since the latest update was applied 2 days ago; Thunderbird now shows only 1 email account, saying there's no mail in it, and I still have no access to my local saved email files. ALL my email accounts have mail in them at the respective email provider websites. When Thunderbird comes up, it does ask me for passwords for 3 email accounts as it did before, rejecting the correct passwords as it did before, but I cannot see four of the email accounts and the one that does show doesn't show a list of emails, even though it purports to be showing me my emails (it says "No results").

i don't see my local email files now, either, and if its some setting in Thunderbird that is causing that issue, I don't know where to find it. I used to see all my email accounts listed on the left side of the Thunderbird window, with my local email folders shown below them. If I ever took any screenshots of a (previous) normal Thunderbird window, I cannot find one now to show here.

Thunderbird has been relatively stable and caused no issues that I can remember, until now.

I will attach a screenshot of the Thunderbird interface window that now comes up (below). What is going on here? Aaarrgghh!

I would try deleting the Thunderbird program and re-installing it, but I fear that I would lose all my saved and sent emails, and my local email files. I guess I could try shutting off the internet, saving a copy of my sysres, and then delete and re-install Thunderbird and turn the internet back on (but that wouldn't get my local email files back even if some miracle occurred that allowed me to see all incoming emails); if that didn't work then I could restore my backed-up sysres to return to my current situation and turn the internet back on, for no gain or loss. ...Too daunting to contemplate.

It probably says no results because you have clicked on the "attachments" item of the filter.

Wayne, I am moving back to my original thread, as you suggested:

   https://support.mozilla.org/en-US/questions/1350427?page=1

But, I don't follow what you mean by saying I clicked on the attachments item of the filter... not that I am aware of... what filter, where? In the attachment of my post above, I am showing exactly what comes up automatically when I launch Thunderbird. If you think I altered something in Thunderbird itself (not so, more likely altered by the latest Thunderbird update), please point me to the parameter I may have altered (and tell me how to get to that parameter).

BTW, my first name is Wayne, also.

I don't follow what you mean by saying I clicked on the attachments item of the filter... not that I am aware of... what filter, where?

It's about the Quick Filter toolbar. https://support.mozilla.org/kb/quick-filter-toolbar

I used to see all my email accounts listed on the left side of the Thunderbird window, with my local email folders shown below them.

View (Alt-V) - Layout Check the "Folder Pane" item.

I used to see all my email accounts listed on the left side of the Thunderbird window, with my local email folders shown below them.

View (Alt-V) - Layout Check the "Folder Pane" item.

Spot on. I had forgotten you can remove the folder pane.

I don't follow what you mean by saying I clicked on the attachments item of the filter... not that I am aware of... what filter, where? In the attachment of my post above, I am showing exactly what comes up automatically when I launch Thunderbird.

Thunderbird remembers the quick filter settings when you restart. And the dark area around "Attachments" indicates that it will only show messages with attachments. Click it to remove that filter criteria.

My intention was to move this thread into my original thread... but... I'll answer here...

OK, thanks Christ1 and Wayne, by playing with the Thunderbird settings I am starting to see some improvement here! (I had a very modified view of email accounts, that recent update changed all my prior settings, is that normal?).

Prior to this month's Thunderbird update, all my email accounts were listed in a column on the left and I could select one to see the list of received emails for the account. The update screwed up all my old settings. Today I only saw the first email account ...but I found the setting to change my view and now I see all the accounts listed, with their list of incoming emails, and local folders appear to be fine.

But I am now back to the password issue, where only the first and last email accounts/folders work normally, the middle 3 accounts/folders show the list of emails in my inbox but Tbird asks for a password when I try to go to one of those 3 middle accounts and then rejects the correct password (2 of those errant accounts are with zoho, the third is with Gmail)

I appear to be down to just a Thunderbird password issue. I know the passwords I am typing in are correct (as were the ones held by Thunderbird the last time I looked, a few days ago before the November updates) and the passwords work fine if I use Firefox to go to those email providers websites to view my email.

I am struggling to find Thunderbird's password file (I've found it in the past easily, but not so easily today)

OK, I found my way to the Thunderbird password file (via Preferences/Privacy/Passwords) It contains stored passwords for the 2 accounts that work, and for 1 account that Thunderbird rejects the password.

There are 5 email accounts in Thunderbird.

As I've said previously, it doesn't seem to matter what order I list the 5 email accounts in Thunderbird, the first and last accounts passwords are accepted, while the middle 3 accounts' (correct) passwords are rejected.

I have to take back an assertion I made above about the first and last email accounts working... only two account passwords are accepted (out of 5 accounts defined to Thunderbird, 2 at Zoho work, the other 2 at Zoho do not work, the 1 at gmail does not work). It doesn't appear to matter what order I put those accounts in, using Account Settings, only the same 2 accounts work. I cannot sign in to the other 3 accounts

Before last July, all 5 email accounts worked fine on my 3 computers, now all 3 have the same problem.

The 3 inaccessible accounts show me a list of inbox emails, but the emails listed are old (July 2021 or earlier; those and newer emails are on the email providers website). If I try to open any old emails shown in those 3 inaccessible accounts Thunderbird asks me for the account password and it is rejected.

For those accounts I can't access through Thunderbird, I have been reading emails directly at their websites since my problems began last July. Emails never got downloaded to Thunderbird from those sites after my Thunderbird problem occurred.

I would much prefer to be reading all my emails via Thunderbird.

3 of the 5 accounts have passwords in Thunderbird's password file; one of those 3 accounts is one of the two accounts that work (both at Zoho.com), the other 2 fail on password (1 at Zoho, 1 at Gmail); there are 2 more accounts defined in Thunderbird, both at Zoho and neither of them have passwords saved in Thunderbird.

OH WOW, I just discovered a whole new can of worms.

About 2 weeks ago I had installed Thunderbird on a virtual Win 10 machine, as part of working on this issue. It did not appear to resolve my issues, I still had multiple email accounts I could not access.

Today I brought up that virtual Win 10 machine again, and all but 1 of my email accounts was working (the lone holdout is a Zoho email account that rejects my password, the same issue I am having in spades on my real machine).

My recollection is that when I first built the test Thunderbird on the virtual Win 10 machine, I was having the same issues with Thunderbird as I have with the real machine (could only access 2 email accounts). Cannot explain that, perhaps my memory failed me.

I noticed, however, that the virtual Win 10 runs a 64-bit version of Thunderbird, while (for reasons I do not recall except to say my computer(s) evolved through a series of hardware and software upgrades over many years from Windows XP) my real machine runs a 32-bit version of Thunderbird. Don't know if that is a root cause of my issues, since it wasn't a problem until last July. Theoretically, it should not matter.

But, I'd like to convert Thunderbird on my real machine to the 64-bit version to see if that helps; the new version should just download new and saved emails from the email provider, but what about my local folders, how can I preserve those?

64bit will make zero difference, and unfortunately asking here makes this already difficult thread even messier.

If you want to pursue that, please ask in a new topic with that specific topic title.

Christ1, sorry to be slow in replying to your helpful suggestion. It took me awhile but I finally figured out how to get the initial Thunderbird screen to show things the way they were before; the recent release had screwed up my settings. Now, if only I could get the other 3 of my 5 email identities working.