I have a simular issue. I received version 128.10.1esr (up-to-date it says) and I'm since that update not in the possibility to see mail content from mails stored local. I see the e-mails, I can search on content, but when I open them I only see a black body. No possibility to see the content.

Mails on the mailserver can be opened en viewed like they used to.

I have a simular issue. I received version 128.10.1esr (up-to-date it says) and I'm since that update not in the possibility to see mail content from mails stored local. I see the e-mails, I can search on content, but when I open them I only see a black body. No possibility to see the content. Mails on the mailserver can be opened en viewed like they used to.

Same here.

On the webmail its all good, if i make a "new" profile, its all good, i just didnt want to mess with all the settings, pop folders, etc etc

Is the problem seen with Inbox only? What size is your Inbox folder? What is your anti-virus software?

Anti-virus software corrupting Thunderbird mail files is most likely what happened. To avoid problems caused by anti-virus software it is recommended to create an exception in your anti-virus software for the Thunderbird profile folder, so that the anti-virus 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

Depending on the damage done you may be able to repair it by rebuilding the summary file for the damaged folder(s). Right-click the folder - Properties - Repair Folder

In the worst case your messages are already gone. In that case they can only be recovered by restoring from a backup created prior to the incident.

These are some more generic suggestions to avoid problems with anti-virus software. Don't let your anti-virus software scan incoming and outgoing messages.

Don't let your anti-virus software scan attachments.

Don't let your anti-virus software intercept your secure connection to the server.

Remove any add-ons your anti-virus software may have installed in Thunderbird.

Keep it working. https://kb.mozillazine.org/Keep_it_working_-_Thunderbird

And last but not least, backup your Thunderbird profile on a regular basis. https://support.mozilla.org/kb/profiles-where-thunderbird-stores-user-data#w_backing-up-a-profile

Is the problem seen with Inbox only? What size is your Inbox folder? What is your anti-virus software? Anti-virus software corrupting Thunderbird mail files is most likely what happened. To avoid problems caused by anti-virus software it is recommended to create an exception in your anti-virus software for the Thunderbird profile folder, so that the anti-virus 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 Depending on the damage done you may be able to repair it by rebuilding the summary file for the damaged folder(s). Right-click the folder - Properties - Repair Folder In the worst case your messages are already gone. In that case they can only be recovered by restoring from a backup created prior to the incident. These are some more generic suggestions to avoid problems with anti-virus software. Don't let your anti-virus software scan incoming and outgoing messages. Don't let your anti-virus software scan attachments. Don't let your anti-virus software intercept your secure connection to the server. Remove any add-ons your anti-virus software may have installed in Thunderbird. Keep it working. https://kb.mozillazine.org/Keep_it_working_-_Thunderbird And last but not least, backup your Thunderbird profile on a regular basis. https://support.mozilla.org/kb/profiles-where-thunderbird-stores-user-data#w_backing-up-a-profile

It's not only on the inbox, its every folder.

Even the delete ones, trash, to send, local folders - everything.

Already tried to "repair" a couple folders - doesn't work either.

The AV doesnt has email protection enabled, and the profiles in all the computers are "whitelisted"

Is the problem seen with Inbox only? What size is your Inbox folder? What is your anti-virus software? Anti-virus software corrupting Thunderbird mail files is most likely what happened. To avoid problems caused by anti-virus software it is recommended to create an exception in your anti-virus software for the Thunderbird profile folder, so that the anti-virus 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 Depending on the damage done you may be able to repair it by rebuilding the summary file for the damaged folder(s). Right-click the folder - Properties - Repair Folder In the worst case your messages are already gone. In that case they can only be recovered by restoring from a backup created prior to the incident. These are some more generic suggestions to avoid problems with anti-virus software. Don't let your anti-virus software scan incoming and outgoing messages. Don't let your anti-virus software scan attachments. Don't let your anti-virus software intercept your secure connection to the server. Remove any add-ons your anti-virus software may have installed in Thunderbird. Keep it working. https://kb.mozillazine.org/Keep_it_working_-_Thunderbird And last but not least, backup your Thunderbird profile on a regular basis. https://support.mozilla.org/kb/profiles-where-thunderbird-stores-user-data#w_backing-up-a-profile

Also, since 6 other people seem to have this issue - im assuming it was some update bug

Is this an IMAP account?

Also, since 6 other people seem to have this issue - im assuming it was some update bug

I think that's very unlikely, v138.0.1 is a bugfix release, and there were no major changes. https://www.thunderbird.net/en-US/thunderbird/138.0.1/releasenotes/

There are frequent complaints in this forum though, similar to what you were reporting. And the culprit often is anti-virus software.

Is this an IMAP account?

Also, since 6 other people seem to have this issue - im assuming it was some update bug

I think that's very unlikely, v138.0.1 is a bugfix release, and there were no major changes. https://www.thunderbird.net/en-US/thunderbird/138.0.1/releasenotes/

There are frequent complaints in this forum though, similar to what you were reporting. And the culprit often is anti-virus software.

I encounter the issue on another version (dutch version, 128.10.1esr )

I can view the mail I needed via an MBox viewer.

In Thunderbird I tried to foward the e-mail (right mouse click, forward as attachement) and then I can't send that e-mail because I don't have acces to that e-mail. Is that error telling something about the real issue?

I use kasperksy, of course I scan my e-mail traffic, but the issue occurs only on my local folder, mails stored on my local network storrage. E-mails on the mailserver can be viewed.

As I can view mails via en MBox viewer, other people are reporting this, I should think this is a bug.

Is this an IMAP account?

Also, since 6 other people seem to have this issue - im assuming it was some update bug

I think that's very unlikely, v138.0.1 is a bugfix release, and there were no major changes. https://www.thunderbird.net/en-US/thunderbird/138.0.1/releasenotes/

There are frequent complaints in this forum though, similar to what you were reporting. And the culprit often is anti-virus software.

POP

the issue occurs only on my local folder, mails stored on my local network storrage.

You apparently didn't mention that piece of information in your OP. So this seems indeed to be a regression.

See https://bugzilla.mozilla.org/show_bug.cgi?id=1966256 Is this what you're seeing?

the issue occurs only on my local folder, mails stored on my local network storrage.

You apparently didn't mention that piece of information in your OP. So this seems indeed to be a regression.

See https://bugzilla.mozilla.org/show_bug.cgi?id=1966256 Is this what you're seeing?

Im using a location on my server yes.

is that the issue? i couldnt really figure out from the bugzilla website.

what are the steps to fix it?

the issue occurs only on my local folder, mails stored on my local network storrage.

You apparently didn't mention that piece of information in your OP. So this seems indeed to be a regression.

See https://bugzilla.mozilla.org/show_bug.cgi?id=1966256 Is this what you're seeing?

That's my situation, but no idea if that's the case in OP's situation. Based on what I'm reading, looks like this issue (I use an UNC path). I'm trying to downgrade later today and give feedback when done. Thx!

what are the steps to fix it?

I don't think there's much you can do, other than downgrade to v138.0. There will likely be a fixed version 138.0.2, but I don't know when this would be available.

You probably want to select the option "Check for updates, but let me choose whether to install them" in your Settings, to avoid being automatically updated to v138.0.1 again.

I'm a little confused about the versioning. I have version 128.10.1esr (build few days ago). https://www.thunderbird.net/en-US/thunderbird/128.10.1esr/releasenotes/

But the latest version seems to be 138.0.1 Why this gap? What version should I use to temporary downgrade?

What version should I use to temporary downgrade?

There are different Thunderbird update channels. v138 = release channel v128 = esr channel

https://developer.thunderbird.net/releases/channels

You're on the esr update channel, so you'd need to go back to v128.10.0.

So it WAS a 138.0.1 bug with network / UNC locations

after i

1 closed thunderbird 2 unninstalled 138.0.1 3 deleted compatibility.ini file from the Profile folder. 4 installed 138.0.0

it started up without problems and its now working

What version should I use to temporary downgrade?

There are different Thunderbird update channels. v138 = release channel v128 = esr channel

https://developer.thunderbird.net/releases/channels

You're on the esr update channel, so you'd need to go back to v128.10.0.

Thx! 🙏😊

Solved for me as well! thx!

Fixed in new version (128.10.2 esr for me).