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Am getting this message along with a recurring download of a specific email (keeps coming back even after deletion) that does not allow any other new messages to be downloaded. I do see new emails on my phone but will not read into Thunderbird??

Error: "Unable to write the email to the mailbox. Make sure the file system allows you write privileges, and you have enough disk space to copy the mailbox."

Tried: Troubleshooting, closing Thunberbird and reopening, rebooting windows system, compacting, etc. to no avail....

After updating to Thunderbird version 140.0esr, I am unable to create a new email. Clicking “Write” or “New Mail” does nothing – no compose window opens. However: • Receiving and replying to emails works normally • Safe Mode does not resolve the issue • Disabling all add-ons has no effect • Reinstalling Thunderbird did not help • I confirmed I am using version 140.0esr

starting just now, firefox will not take me to ANY website. All other browsing services are working. I have tried uninstalling and reinstalling and clearing cache and cookies.

If I cant get this fixed for my job I will go back to chrome and never download or retry this again. I will also never recommend firefox to anyone like I have in the past.

All my other browsers work fine but since April 4, 2025 Firefox won’t work at all. Websites won’t load. I have tried to clear my cache & cookies, I have checked my connection settings, I have checked for malware, I have turned off all my extensions and I have completely restarted my computer several times now, nothing has worked. I also did trouble shoot mode & reinstalled Firefox (though I will admit I maybe didn’t do this step properly). I refreshed Firefox. Why is it not working? What happened? I don’t know what to do as I don’t want to lose all my bookmarks and passwords that I have yet to move over to my password manager. Please help.

After every update, Firefox starts to a blank screen and will not start loading the webpage url put in for over twenty minutes to a half hour. During this time other browsers on my Win 10 PC load immediately so it is not a network issue. It is Firefox. When I see that an update is pending I hesitate to do the update because I know I will lose the use of Firefox until it is ready to respond. It just hangs with "loading X.com" showing at the bottom left of the blank screen. I have been using Firefox for a long time and in the past year or longer it has become very unreliable. There are also instances where without an update it will do this and the only way I can get it to work is to clear the cache and the history through settings. What is going on with Firefox! (And lately there is an update every couple fo days!

Sending of the message failed. The message could not be sent because the connection to Outgoing server (SMTP) smtp.gmail.com timed out. Try again. Claude Hamel landbaron52@gmail.com

I'm on an older Macbook Pro with OS 10.12.6 My browser says it's up to date.

It seems that ever since I did a sync-up with another Macbook, glitches have appeared on this machine. One thing happening now is that some websites take forever to load in, and others won't load at all. With other sites there's no problem. I have a fiber optic connection. The speed test indicates that all is good. I did reboot recently.

I'm wondering if some sites are using advanced scripts that my older machine doesn't like, or perhaps recent updates from Firefox just don't work as well on this machine. Any suggestions??

Trying to Import a csv address book file to Thunderbird address book. Unable to get 'Match field names' to work. Unable to set/change any Address book field names. Each field name seems to be fixed / frozen to the default name of the expected column/ field name.

There is a drop down list for each field, but only one option exists in the drop down list. So, I can not get my csv to translate/convert over to the Thunderbird fields.

Same problem seems to exist in Betterbird. Thanks for any help.

Phil Payne USA

I have notice that firefox android v136.0.1 consume more battery than the onther famous browser (edge, chrome, bhave) in android 14. I request to make firefox android battery efficient.

Thunderbird hangs immediately as soon as I click the Junk folder. Another issue that may be related to this. I posted a question about Thunderbird hanging in a few minutes after starting. It hung this morning when I was downloading the message. The inbox, which had hundreds of messages, became empty. After I downloaded messages again, it had over 6000 messages, most of which were junk. It seems the junk filter is not working now. Could anyone offer a tip on the remedy for this?

Secure Connection Failed This happens only on FIREFOX. NOT any other browsers that I have. I contacted the tech group on the site that I receive this message for the last 3 or four months. They checked everything on their end...it is a browser issue!

When I click on Thunderbird to read my Emails I get a warning box popup saying ( Configuration Error. Failed to read the Configuration File. Please contact your system administrator) When I click OK the box closes and Thunderbird Email starts up and I can then read and send emails. I can't contact the administrator because I am him and I don't know how to fix this error. I would be pleased if any one out there knows how to correct this error. Thanks for Helping.

I would like to open attached docs and print them. They are appearing all black with some verbiage, or multiple pages are all white. What is going on? How can I fix this? Step by step instructions, please. Technically challenged. I do NOT use cloud. will not be using it due to privacy and hacking issues. I save everything to my harddrive.

(Title): VPN is not working on my laptop

(Description):

Hello, I installed a VPN on my laptop, but it is not working. I cannot connect to any servers. I have tried restarting my laptop and reinstalling the VPN, but the problem still exists. How can I fix this issue?

Thank you.

ThunderBird for Linux crashes down automatically every 5 minutes since the last update. Every time I log into my account, about 5 minutes later, I see from the monitoring terminal that ThunderBird's temporary memory usage suddenly soars to over 90%, and then the entire program becomes unresponsive and must be closed and logged in again. But after that, this situation keeps repeating, and it is impossible to use it. Can anyone help? Thanks!

Hello!

I have Firefox in all my units and it has worked very well over the years. Until I activated Avast SecureLine VPN on my computer HP Microsoft 11.

When the computer is connected to wifi/internet and VPN is activated, the Firefoxprogram won´t start correct. It says I am offline. If I then turn VPN of and update the page it will work immediately. As soon the page start the update I can turn VPN on and it will work on every link and page.

What can I do to get rid of this problem?

/Mattias Forsberg

Along with many other Firefox users, I have a long-term problem with a PR_END_OF_FILE_ERROR in Firefox. How can Mozilla Support fix this problem for me? Can you send a link with the solution, or something?

Thank you, Joseph Seecchack, [edited] @aol,com. I eagerly await your response.