Thanks for posting.

Are you still seeing this issue today? And if so a) what version are you currently running? b) what version does it want to update you to?

Still seeing it about once a day, and here is my debugging report for version & build.....

Application Basics

   Name: Thunderbird
   Version: 68.1.0
   Build ID: 20190909201201

   Update Channel: release
   User Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.1.0
   OS: Windows_NT 10.0

 I will capture a screen of the popup asking me to download the latest which it said is 68.1.0 that I am running already.

Just an update, I just downloaded 68.1.1 and installed it " success " and install/upgrade worked fine... Did not show new version in the help/about tab, I found out about newer version from the version page. I will further report if problem is still happening.

I have 68.1.1 still getting download pop-up.

Still getting update pop up!!

Popup is still showing up.

You have a 64bit version of windows, when you click help > about from the menu, does the about screen say you have a 64 bit Thunderbird?

No official 64 bit downloads yet.

I asked you a question, you did not answer that question. You instead chose to make an assertion. One that is actually factually incorrect. https://www.thunderbird.net/en-US/thunderbird/all/

I did not say install it, I asked you if it was 64 bit or not. Some folks received the 64 bit update before updates were turned off. Subject to a resolution to 32 to 64 bit conversion bugs. Others are perhaps being prompted to update to 64bit despite already having a 32 bit version already installed. That is my line of inquiry, but I can stop and leave you with a propmt that you do not understand. it is up to you really.

Wasn't me that answered... and no, it reports it's a 32 bit version, 64 bit is not out/available? I am the question owner too.

I suggest for the short term you put up with it.

Bug 1583129 landed 11 hours ago, but I am yet to see a build that has come from that. The first publicly available may well be 68.2 in a couple of weeks.

Whilst you could download the 64 bit version right now from the link I posted, that bug should make it much less likely that you have to spend time scratching around trying to reset your profile to what it was after the update. (Lots of discussion around that issue)

However I would be keen to hear is installing a 64 bit version does stop the popup. I think it will. I really don't think the developers have much of a handle on the install/ update thing. It is almost entirely developed by the Firefox team and it is only when their are issues does anyone really dig in there. So somethings we think we understand are far more subtle than they first appear.

I gave an answer as I did a search and nothing popped up with a download from Mozilla that was a 64 bit. When I hit the the enter line from your post I was finally able to download the 64 bit ,but it had none of my information in it and now; what to do? The about menu says nothing about 32 or 64 bit in the one I had which leads to confusion. When you try to go to page for the download from the pop-up it doesn't list the 64 bit!

Do this for Windows 10 (should be same for 7&8)

1) Open up your windows drive (mine is C:) and navigate to; C:\Users\"your login account "\AppData\Roaming\ Copy the whole directory C:\Users\owner\AppData\Roaming\Thunderbird to have a backup of your profile & and save it on another drive, or thumbdrive...

2) Download the 64 bit version from https://www.thunderbird.net/en-US/thunderbird/all/ and install

3) Open up C:\Users\"your login account "\AppData\Roaming\Thunderbird\Profiles and delete everything inside the Profiles directory.

4) Copy the contents of the Profiles dir you backed up back into C:\Users\"your login account "\AppData\Roaming\Thunderbird\Profiles, so it looks like the backup profiles you made.

Run thunderbird and see if it is working now.

Btw for all you Firefox & Thunderbird users out there Mozilla Backup does work fine for making standalone backups & restores of both. I have used it with no problems on either programs data.

Search in C says not found, I have downloaded 64 bit . I just can't find the info .

What version of windows are you running? Search also will not find hidden directories unless logged in with admin lvl access.

Seems I am in middle of something

Hmm, I ask a question and then off we go to install exactly what I said I asked not be installed just yet https://support.mozilla.org/en-US/questions/1269431#answer-1256482.

Perhaps these instructions will help. https://thunderbirdtweaks.blogspot.com/

I wrote those because bug 1583129 had not been fixed. It is still not in a version available for download.

Matt said

Hmm, I ask a question and then off we go to install exactly what I said I asked not be installed just yet https://support.mozilla.org/en-US/questions/1269431#answer-1256482. Perhaps these instructions will help. https://thunderbirdtweaks.blogspot.com/ I wrote those because bug 1583129 had not been fixed. It is still not in a version available for download.

I disagree with your solution.... I did a full backup of all data for my account in Thunderbird 68.2.1 64 bit & completely unsinstalled it AND removed any leftover files/folders/registry settings then did a scan to make sure it was wiped off of ssd. Then I installed from the exe installer the 64 bit and recovered all my users data settings and mail from backup. EVERY 24 hours I get the popup notice to update Thunderbird when it already is the latest version and there is only the 64 bit version on my ssd... It seems there is no version check being done...

Are you using Kaspersky ?

If not, what antivirus program? And what other tools that help "manage" your program updates? (ccleaner, etc)

It seems the problem is still existing. I have version 68.2.2 (64-bits) (in Dutch) and keep getting the message. And, Yes I use Kaspersky. It started a couple of weeks ago when I installed Thunderbird on a new laptop, now in 64-bits. I don't know what other "help" tools are installed next to standard Windows 10.