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i have an old win10 machine with a huge thunderbird profile - 37.9GB size / 75.2GB disk. i'd like to move it with Tools Export / Import to a new win11 machine.

on win10 i click thru tools > export > open profile folder

and in ...\thunderbird\profiles i select yhcc00j7.dan and export it to an external ssd.

it runs for hours and then a number of these appear: "Are you sure you want to copy with file without its properties? The file %2B...." has properties that can't be copied to the new location.... Type WDSEML file size 1.02KB....".

so i check "Do this for all current items" and hours later it finishes.

on win11 i click thru tools > import > import from another thunderbird profile > choose a profile and select the folder yhcc00j7.dan on the ssd and import everything > start

for a minute or so it says "importing .... 0%" but no new profile shows up in ...appdata\roaming\thunderbird\profiles\ and then "import failed unexpectedly" is displayed.

i've tried this twice. both machines have version 115.11.1 "esr update channel". what am i doing wrong?

I upgraded from 126.0.1 to 127 today. Upon update, all my windows are gone. The only way I could access them is to revert to an older profile backup and reinstall 126.0.1.

I tried exporting my session with Tab Session Manager in 126.0.1 and reopen them in 127, but that only restores the last tab of each window (oddly). The json clearly lists 3 windows each with multiple tabs. I tried copying the sessionstore-backups folder, but no dice.

Symptoms similar to : https://support.mozilla.org/en-US/questions/1446921

Ive tried reinstalling firefox because i am not able to download anything with this browser. I thought freshly installing firefox would fix the issue and allow me to download but it didnt. I also am tried to download an addon/extension, and that automatically fails to download. How can i fix this?

I have been trying to solve this for a few days now. I tried to watch Netflix when it said, "Firefox is installing components needed to play the audio or video on this page. Please try again later."

I found out this was due to Widevine not being installed AT ALL on my browser for some reason. The plugins manager has been saying that it will "be installed shortly" for a week now. I already tried toggling DRM off and on multiple times. I already tried using troubleshooting mode. I already checked GMP preferences to make sure nothing relating to Widevine was set to 'false'. I already tried turning off my antivirus long enough to try everything again and still nothing has changed. I do not have any VPNs running either. I am attaching a screenshot of what the browser console shows when I toggle DRM off and on again and try to run Netflix. I am also attaching what the gmp toggles say. Please help me figure out what is wrong!

Hi, I keep getting this error when I try to download any extension. I also get an automatic download fail as soon as I try to download anything. I have tried several solutions such as changing privileges to reinstalling firefox entirely. I have checked other browsers on my computer and it is just firefox.

I have created an entry in my Personal Address Book. When I am in that address book I click on the Import tab. I select CSV file. It provides me a File Dialog to select my CSV file. But then it provides me with a File Dialog to select an address book file. The address book I want to use is the one I am currently "in" in the program. But if I for some reason I wanted to import into another existing address book, I should either have to get "in" that one, or it Mozlla Thunderbird would list the address books it knows about as a selection.

It appears I am supposed to select the file that Mozilla Thunderbird created somewhere. From a search it appears (this is on Windows 11) from the App Store that is somewhere in ..\AppData\Local\MozillaThunder.MZL_h<numbers and letters>\LocalCache\<Roaming | Local>.

I don't understand why I am choosing a file that is already open in Mozilla Thunderbird?

I have a System 76 laptop running Ubuntu 14.04 LTS. The LTS (Long Term Support) ended years ago with Firefox 66. All of that works fine still. My problem is: 1. The world is telling me to upgrade my browser. 2. Mozilla tells me "Note: If you use your Linux distribution's packaged version of Firefox, you will need to wait for an updated package to be released to its package repository. This article only applies if you installed Firefox manually (without using your distribution's package manager)." 3. There will never be an updated package because LTS has ended. 4. IS THERE A WAY TO MANUALLY INSTALL A NEWER BROWSER LIKE FIREFOX 123?

TIA , Time to Migrate TB Portable to new computer : I was advised that all need to do is Copy this Folder C:\ThunderbirdPortable to new computer . But that doesn't bring over all my email accounts . Pls , what else do I need to do ? Thanks...

Hi all. I had a hard drive failure and managed to mostly clone the old drive to a shiny new one. There were errors logged during the clone and TB appears to be a victim of those errors.

Win 11 x64.

When I launch TB I get the icon on the taskbar but no main screen. If I hover over the icon I see a small box with the TB logo top left where you’d expect it, and Home next to it. Clicking it has no effect. TB appears to be functioning because new emails are being filtered according to the Rules, as witnessed on my phone.

I tried reinstalling 115.11.1 with no change. So obviously somethings fubar with my profile. What is the best way to proceed? Obviously I’d like to avoid having to set up all my email accounts plus the associated rules etc if it’s possible. I use IMAP if it’s relevant.

Thanks in advance, Tony

Recently Firefox always has the error "failed to check for update". I have tried restarting my pc and running as admin. I am on windows 10.

I have been able to manually install the latest version by installing it over the top of my current install, how can I fix the error to be sure that my browser will auto update?

Thanks

I have added my gmail account to TB and it downloads all the folders and emails correctly, but as soon as I try to move an email with an attachment from a local folder to a folder on the gmail acount I get "Connection to server imap.gmail.com timed out" errors.

Prior to update 125.0.1 corporate intranet users could download PDF files from our Line of Business applications / Webpages. Today after the latest update the PDF files download but are corrupted. The site was added to the trusted webpage without improvement.

Adobe Acrobat Reader could not open ********.pdf because it is either not a supported file or because the file has been damaged

duplicate of /questions/1448898 thread.

When attempting to install a "clean" verison (delete old, install new) I get an error message about using the firefox removal tool. Where do I get it and how do I remove the old one and install a newest version?

Hi there,

On the 23. of Mai I first noticed that I am unable to download any files whatsoever. I tried downloading .exe files and also a .csv file. When I try to download one of these files it appears in the downloads window but immediately goes to the status "Failed". Any retry fails as well.

The same thing goes for extensions. I cannot download any extensions or plugins using my Firefox browser. Since I reinstalled Firefox I can now also not use Plex because Firefox can't install the required plugins.

I will attach screenshots of all the errors I get.

All of the above worked when I tried it on the Edge browser.

Firefox version: 126.0 Windows 11

Things I have tried to fix the issue:

• Use the network connection from my phone instead of my home network
• Disable firewall and windows defender
• Reinstall Firefox
• Refresh Firefox
• Downgrade to version 125.0.1 and 122.0
• Reset router to factory settings
• Flush dns
• Restart PC
• Manually delete profile folder
• Delete temp files
• Change download destination
• Disable "Block dangerous and deceptive content"
• Troubleshoot Mode

Is Firefox using some other temporary folder for downloads?

Any ideas on how to fix this issue would be appreciated.

Thank you.

Hello, I installed Thunderbird using POP3 to download all emails from my Zoho Mail server to store them in my PC but although all emails appear now to be in the inbox, there are no subfolders, emails are grouped according to subject titles and I cannot seem to find the latest email on the list. What can I do to display them chronologically by date and restore subfolders and archives? Upon lauching, this is what I get. Thank you

Win 10. Multiple email accounts, some gmail plus others. I had TB 115 something (it's uninstalled so not available to see). I run Firefox without issues. TB went completely haywire, all email accounts disappeared, nothing worked (second time this year) but recovering was proving too difficult and I'd already spent a whole day on it. I decided to uninstall and install a fresh copy. First I copied the single profile to an external drive. Then I uninstalled TB. Then I ran Ccleaner to tidy up the remaining TB cache and other remnants, also cleaned the registry. I downloaded a new copy from Mozilla's site, ran the install file, The install dialog box offers the same install location as the previous location, same user. Upon clicking install, the dialog box disappears and nothing happens. I've tried this more than ten times now, including fresh downloads from Mozilla. The dialog box offers an alternative user as Administrator but that won't work because I don't actually have the administrator account set up with a password, and TB demands the password. I do not want to open a new user account just for TB. Any suggestions for working round this will be gratefully received.