Firefox Root Certificate Expiration: Questions & Tips for Updating

Important update! On March 14, 2025, a critical root certificate in Firefox will expire. If you’re still using an older version (before Firefox 128 or ESR 115.13+), it’s … (read more)

Important update! On March 14, 2025, a critical root certificate in Firefox will expire. If you’re still using an older version (before Firefox 128 or ESR 115.13+), it’s crucial to update to Firefox 128 or newer to avoid issues with add-ons, DRM-protected content, and other features.

For full details, check out Update Firefox to prevent add-ons issues from root certificate expiration.

If you have questions about the update or need help with the process, this is the place to ask! Whether you’re just starting or you’ve already updated and want to share your experience, we’d love to hear from you.

Let’s come together, share tips, and ensure we’re all prepared. Drop your questions or insights below!

Asked by Lucas Siebert 3 months ago

Last reply by ahonx.n21 21 minutes ago

Firefox Android Beta - Downloading PDFs

Now it's completely impossible to open PDFs outside Firefox, as I could do until the last couple of beta versions. This trend is going on since a few years ago, from bad… (read more)

Now it's completely impossible to open PDFs outside Firefox, as I could do until the last couple of beta versions.

This trend is going on since a few years ago, from bad to worst. The whole design of the PDFs download process is bad. PDFs should be treated by FF as any other file: download and open with the system default PDF viewer. Imposing Firefox's internal PDF viewer as mandatory for downloaded PDFs is nonsense.

Asked by pp.luca 1 month ago

Last reply by gareth.fabbro 34 minutes ago

supprimer des milliers de messages vides

thunderbird est un tas de bugs de plus en plus inquiétant j'ai plusieurs milliers de mails absolument vides dans thunderbirds mails vides inaccessibles impossible à enlev… (read more)

thunderbird est un tas de bugs de plus en plus inquiétant j'ai plusieurs milliers de mails absolument vides dans thunderbirds mails vides inaccessibles impossible à enlever pas de destinataire pas d'expéditeur pas de sujet taille à zéro 0Ko date annoncée à 1971-01-01, 01:00

je fais comment ?

merci

Asked by Rémi 22 hours ago

Last reply by frisée 1 hour ago

Unable to import data from outlook

Dear Sir We had recently installed fire fox, trying to import outlook data for same POP account with same password, but firefox showing importing data folders also create… (read more)

Dear Sir We had recently installed fire fox, trying to import outlook data for same POP account with same password, but firefox showing importing data folders also created, but no progress seems. can you suggest some solutions.

thanking you

Asked by Ravi Singh 21 hours ago

Last reply by frisée 1 hour ago

Unterordner

Ich konnte unter "Posteingang" Unterordner anlegen, um E-Mails darin zu verteilen. Früher konnte man dieselben Unterordnernamen auch unter "Gesendet" erstellen und ich m… (read more)

Ich konnte unter "Posteingang" Unterordner anlegen, um E-Mails darin zu verteilen. Früher konnte man dieselben Unterordnernamen auch unter "Gesendet" erstellen und ich möchte das auch wieder machen. Wieso wird das nicht mehr angeboten? Gibt es einen Ersatz?

Asked by hans-d.widmaier 1 hour ago

Last reply by frisée 1 hour ago

Thunderbird setup issues

I am about to lose access to Outlook. My current settings show imap.mail.yahoo.com and smtp.mail.yahoo.com and it is working. This is an sbcglobal.net account. When I l… (read more)

I am about to lose access to Outlook. My current settings show imap.mail.yahoo.com and smtp.mail.yahoo.com and it is working. This is an sbcglobal.net account. When I look at what ATT says it should be due to changes they made it reflects imap.mail.att.net and smtp.mail.att.net. The ports are the same between both choices. It says on both of these when entered that it can't access and the user name or password is incorrect which is not the case. Any help out there???

Asked by lwfox 17 hours ago

Last reply by frisée 1 hour ago

Thunderbird cannot connect to ISP mail server, cannot get mail

Thunderbird, quite suddenly, stopped getting my email; Both on my account and my wife's account at the same ISP. I spent more than two hours on the phone with the ISPs he… (read more)

Thunderbird, quite suddenly, stopped getting my email; Both on my account and my wife's account at the same ISP. I spent more than two hours on the phone with the ISPs help line trying to resolve this issue. They also use Thunderbird at their help desk, and the agent I talked to was familiar with your program. She (the agent) was not able to replicate the issue on their system. We then tried to set up a NEW email account. I carefully entered all the info needed for a new account, following instructions from the agent, then hit the 'Test' button. I got the following message onscreen: "THUNDERBIRD FAILED TO FIND SETTINGS FOR YOUR EMAIL ACCOUNT" The answer to the original issue suddenly became very clear - Thunderbird cannot, or refuses to, connect with the email server, therefore NO EMAIL. We tried everything in her toolkit to resolve the problem to no avail. We finally tried UNINSTALLING Thunderbird (and the Maintaince program). Once Uninstalled, I used the Registry Tool on CCleaner to remove any entries in the registry referring to Thunderbird (there were several), then restarted my computer. I then downloaded and installed a totally NEW Thunderbird program. When I ran the Thunderbird again, I found all my account(s) info was still present, and Thunderbird was still unable to find the server. I'm at my wits end trying to resolve this issue, and REALLY HATE to go back to Microsoft OUTLOOK to get my email. Anybody got any ideas??? Any help would be greatly appreciated. (Signed) Proteus

Asked by proteus2 3 days ago

Last reply by christ1 1 hour ago

Thunderbird not loading properly

Thunderbird freezes on loading. It seems to be working (window notifications show incoming mails). The top bar has one item which says "loading" but never does! I am runn… (read more)

Thunderbird freezes on loading. It seems to be working (window notifications show incoming mails). The top bar has one item which says "loading" but never does! I am running WIN 11 pro with AVG. I have tried the following: - open TH in program safe mode - Open TH with laptop in safe mode - uninstall and reinstall - Open with antivirus turned off - Deleted all .msf files in current profile (judging by time and date) which seems to have been called xxxxxxxxx.repair . On restart TH did not reinstate the .msf files and the blank frozen screen was still there. - there were about 4 other profiles in the directory although in reality there should only be one. These profiles have various names: defaultnew, default (2 off), default-release and repair. - All profiles except the one with ".repair" were copied to another location before restarting. Any help would be appreciated.

Asked by simon.l 17 hours ago

Last reply by frisée 1 hour ago

i cant send send emails due to password

recently i am having problems with sending emails from my desktop, via thunderbird. it keeps asking me to sign in with my new password. however i have not changed my pass… (read more)

recently i am having problems with sending emails from my desktop, via thunderbird. it keeps asking me to sign in with my new password. however i have not changed my password with virgin. i can send an email from my phone, so i know its not virgin. i have spent 3hours reading up and checked the server and outgoing settings, and changed switched adjusted what i could see, and set them back to the original settings, which in effect meant i have done nothing, and all of a sudden it works again. this did happen a couple of week ago, so not sure what's going on, and i really haven't got a clue what im doing, so any help or advice would be appreciated.

Asked by simon177 15 hours ago

Last reply by frisée 1 hour ago

Log in issue

After I've successfully logged in, why does Thunderbird continue to indicate my login has failed and asks me to login again, repeatedly? Do you know how I can fix this? … (read more)

After I've successfully logged in, why does Thunderbird continue to indicate my login has failed and asks me to login again, repeatedly? Do you know how I can fix this?

Asked by rlm98253 12 hours ago

Last reply by frisée 1 hour ago

Can't compact folders

I have been having much trouble with Thunderbird. The latest problem is with the Sent folder. When I try to Compact Folders I get the message "The folder 'Sent on Local… (read more)

I have been having much trouble with Thunderbird. The latest problem is with the Sent folder. When I try to Compact Folders I get the message "The folder 'Sent on Local' could not be compacted because writing to folder failed. Verify that you have enough disk space, and that you have write privileges to the file system, then try again."

I have plenty of disk space and have Full Control. I tried creating a temporary folder and moving all the Sent messages to it, so that Sent had zero messages. I still got the same message. The file listing showed Sent to have a size of 182 MB even though it didn't contain any messages. I've tried deleting sent.msf to force Thunderbird to recreate the index - didn't work. I tried using Repair Folder. That worked, but when I tried Compacting Folders again it found another folder with the same problem. I fixed that one and then it said the Sent folder was bad once again. I'm going around in circles!

I've deleted and recreated scores of .msf files for various reasons, trying to get Thunderbird to work without errors, but as soon as I get one problem fixed, another one crops up. I'd conclude that it's my computer, except that I'm not having any problems with other programs.

Any thoughts on this particular problem or Thunderbird problems in general? Thanks.

Asked by coffent 11 hours ago

Last reply by frisée 1 hour ago

lost apps

This is 3 time I have lost almost half of my apps while using Firefox. I just lost Firefox and alot of apps and don't understand how this can keep happening? I don't kn… (read more)

This is 3 time I have lost almost half of my apps while using Firefox. I just lost Firefox and alot of apps and don't understand how this can keep happening? I don't know which one's I lost or how to get them back? Very important to get those back. I pay my bills with some of them. Please help. I had to ad Firefox back to even do this

Asked by Johnnyb 4 days ago

Last reply by Paul 1 hour ago

thunderbird reply

Something has changed in the way Thunderbird is handling Replies. Replies used to be added to the original email with an arrow indicating that the email had been respond… (read more)

Something has changed in the way Thunderbird is handling Replies. Replies used to be added to the original email with an arrow indicating that the email had been responded to. Now the reply is added to the mail list as a separate email grossly clogging up the list of emails. Sometimes the "replay arrow" is displayed and sometimes not. I do not want the reply shown as a separate email. Is there some setting that will accomplish this? I have been unable to find anything that looks like it would work.

PS The Bold and Italic for this email did not work.

Asked by Wrangler53 9 hours ago

Last reply by frisée 1 hour ago

Sending emails

I can receive emails fine now as I had trouble for a while and didn't use Thunderbird which was a shame as I like it a lot. But now when I try and send an email it comes … (read more)

I can receive emails fine now as I had trouble for a while and didn't use Thunderbird which was a shame as I like it a lot. But now when I try and send an email it comes up with an error message. Please when answering this please keep it really simple when explaining as I am not very computer savvy. tia. I have enclosed the error message

Asked by fordguy1 3 hours ago

Last reply by frisée 2 hours ago

New sub folders being added to Unified folders

Just wondering if there was a way to change the behavior of Thunderbird. Currently, if I add a subfolder to an IMAP mail account, that folder will show up in the Unified… (read more)

Just wondering if there was a way to change the behavior of Thunderbird. Currently, if I add a subfolder to an IMAP mail account, that folder will show up in the Unified Inbox. Yes, I know how to remove it from there but I'm getting tired of doing that each time I add a folder as I need to do it to multiple devices.

Thanks.

Asked by rjwerth 16 hours ago

Last reply by Wayne Mery 3 hours ago

Sidebar

When I restarted my computer today, Firefox asked me if I wanted to try moving items on the top to a sidebar. I agreed to try it and don't like it but I can't figure out… (read more)

When I restarted my computer today, Firefox asked me if I wanted to try moving items on the top to a sidebar. I agreed to try it and don't like it but I can't figure out how to get rid of the sidebar. Please help.

Asked by Daryll Miller 1 week ago

Last reply by AliceWyman 4 days ago