All Products Community Forum

My eMail has worked fine for many years - until this morning.

 When I first tried to "get messages", I got a response, "connection to inbound.att.net server reset".
 I restarted Thunderbird, and then the computer (Windows 11), and when I tried again, I got, ""inbound.att.net (POP) .. certificate revoked".
 I can login to my ATT webmail, but I can't download eMail to my computer via Thunderbird.

... In my attempt to upload this question, I looked for the TB Version, but it said to update Thunderbird. I did so, not it is back to telling me "connection...reset"

 Please help!

Thunderbird flatpak -1.0 I recently lost the ability to attach files of any kind to messages. when I click the button to attach, no option to choose messages from files are available. I cannot go to the file and share with Thunderbird. I cannot copy a file and attach it. I have tried restarting Thunderbird, and my system (Po_OS Linux) with no result. thanks for the assistance!

Since the Thunderbird update of 30 Sept the ability to attached files to my emails has 'vanished'. I press the attach 'button' but there is no response. Never had this as a problem before. I am running Windows 11 home version. Help!

When writing an email and i try to press attach button, nothing happens and i cant attach file that way. Drag and drop works. This came after updating thunderbird to latest versio 157, earlier attach button worked fine. Any solutions to this problem?

Thunderbird email says the certificate for my Shaw email server does not come from trusted source. The certificate looks fine. I cannot get Thunderbird to "Add exception". The certificate issue seems to be an intermittent problem since yesterday lunchtime. It started working again yesterday afternoon, but stopped working at lunchtime today. How do I stop this error?

AVG sends message: "We've identified a site certificate problem" "Trust for this certificate has been revoked."

Looking at certificate page that AVG provides is Greek to me. General tab displays:

"This certificate has been revoked by its certification authority"

issued to : inbound.att.net

issued by: Digicert Global G2 TLS RSA SHA256 20250 CA1

Valid from: 4/12/26 to 10/28/26

Details tab:

lists a bunch of things that I don't comprehend and offers an option to "copy to file" and lists a number of formats to copy the file to.  Have no idea which would be the one to use. 

Trying to access email directly from browser has not been successful because it wants verify my identity by sending message to my phone, but it does not send anything.

when trying to download email today, says certificate for inbound.att.net is not trusted. android email and browser email are OK.

As of the latest update, the attachment toolbar button in a new mail window does....nothing. Nada. Click it, nothing. I have to drag the attachments from (say) Desktop to the new message window. Works, but...so should the toolbar buttons, which used to.

Tried turning off all addons (i.e., troubleshooting mode) - made no difference.

Earlier today I was able to access my AT&T email using Thunderbird. I have several email addresses & they worked. But later on I could not download any AT&T email. Interesting that my gmail address still works with TB.

I tried a few things - An AT&T address can send to the gmail address & the gmail does receive it. The gmail can send to an AT&T address. The gmail indicates it was sent, but the AT&T address never receives it.

It seems to be an AT&T problem so I went to the AT&T site & deleted the Secure Mail Key an created a new one. Did this on just one address. It can still send to the gmail address, however it still cannot receive anything.

When trying to receive any AT&T email, at the bottom of the screen it displays my address & “Connected to inbound.att .net”. That would seem to indicate I'm connected but just cannot get my email.

And suggestions on how to get TB working with AT&T email? Thanks.

We are not getting emails because we keep getting an error message which reads The certificate for imap.shaw.ca does not come from a trusted source.

Just recently, the "Attach" button in the top right corner of emails in Thunderbird has stopped working. You can click it but it will not open a window to select a file to attach. Similarly, the yellow reminder bar will not allow attachments to be selected.

However, it is still possible to attach a file by dragging and dropping from an open older in Windows Explorer.

The version of Thunderbird I am running is Thunderbird 153.4.0esr (64-bit) [showing as up to date] running on OS Windows 11 Home Version 25H2.

I tried removing the button and then reinstating it (a fix suggested online) but this had no affect. I also checked in properties that the Run as Administrator box was not ticked.

Another fix suggested on line was to rename the file xulstore.json as xulstore.json.old, but this did not solve the problem either.

Any help in solving this problem would be appreciated. Thanks.

Thunderbird will not download mail. It sends this: "The certificate for inbound.att.net does not come from a trusted source." "Location: inbound.att.net:995" Then it sends the data with the certificate information. I am not a programmer, I do not understand what I am supposed to do to get it going again.

I cannot use the attach button to attach files to outgoing emails. Alt+Shift+A does not respond either. I am running Thunderbird from the "Thunderbird Setup 157.0.1" installer. I am able to drag and drop but that method is rather unwieldy. I recently upgraded Windows 11 to version 26H2.157.

I can't get an attachment to an email message. When I select the 'attach' button, nothing happens. I recently cloned my C: drive and am concerned that something didn't get cloned properly

I've had AOL for an Email provider for several years now. I rarely went to the website to check my Email cause Thunderbird was linked to it. But today, AOL seems to be turning off my Thunderbird (I can't send or receive Email at the moment). It's like malware with the continuous popups making me log in to AOL to use Thunderbird but then ending up on some Yahoo Oops screen. I've been using Thunderbird since before I transitioned to AOL after moving.

It's been working fine up until today. When I do anything on Thunderbird, the annoying popup screens appear wanting me to log in. Any ideas? Have I been hacked?

I received an email and when I responded to that I need to attach a document. I was unable to attach it. I went to another email and it also would not attach any document???