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I just started up my new MacBook Pro, M5 pro machine and Firefox will not work. Tahoe 26.3 is OS.

Dale Howard Jonesboro, GA

PS--Safari and DuckDuck Go browsers are working normally.

The method of putting an older jsonlz4 and naming it sessionstore. It's not working. I've also tried session history scrounger and it's just saying "session history file contents couldn't be read". Any ideas, I've lost a LOT of tabs to it forgetting the previous session.

I've tried all files from the session backup folder including the update backups and I used shadowexplorer to get my session files from the 18th.

Thank you for answering my request, Matt, but I cannot send my response via email. So I am copying and pasting what I tried to respond to Matt. Hopefully he can still access my original message if it is needed.

Hi Matt, Thank you for the prompt reply. Unfortunately F10 did nothing when I pressed on it with the cursor in the compose area. No menu bar came up. Nothing changed.

Yes, I guess I did disable the composition toolbar unintentionally as I did R click on the 2 choices (menu bar and composition toolbar) and it made them both go away and no options came up, with nothing left behind in that 'sent' area. (In response to you, it did go 'send later' in gray first and there had been some spotty internet access then but internet did resume fine, but the 'send later' stayed gray, but then disappeared as above.) The email addresses I was using were all current operational addresses.

So I need to get composition toolbar option back up, so I can respond to and send out emails. This is a major problem. I now have no way of responding to emails.

Thanks once again, Mary On 21/03/2026 3:35 a.m., Mozilla Support Forum wrote: > Mozilla Support > It no longer shows a 'sent' option at the top left corner when I am replying. I deleted it by mistake and I need it back > Matt > Mar 21, 2026, 4:35:00 AM > > If the send icon turned grey your computer was not connected to the internet, or you had placed Thunderbird in offline mode (but in that those cases it should change to send later not just go grey) SO just grey usually means that the email address entered in the to is simply not valid. Often there is a space before or after the entry or you have used an address book entry that does not actually have an email address. > > I guess you have somehow managed to disable the composition toolbar by right clicking on the toolbar or menu. If you have neither of those toolbar to right click on press the F10 key in the compose window to make a menu bar visible to right click on >

Hello.

I just installed thunderbird for the first time and i really liked it but there is a problem some of my emails particularly from from Fiverr don't show Fiverr logo at the top within the email maybe that logo has linked wrapped in it on which i can click and it take me directly to my fiverr profile. These are official emails from fiverr. What i have tried: I tried every possible solution that i can get on internet. Show Remote content turning on and off, Turing Simplified view on and off. Turning of the Proxy from auto detect and Turning the DNS off. Fiddling around view settings. Changing settings in Configuration like mailnews.message_display.disable_remote_image, browser.opaqueResponseBlocking.javascriptValidator, browser.opaqueResponseBlocking, etc. But it didn't load the logo image and keep showing broken image place holder. This is also the case with my bank mail, my bank email sometime have an image with warning about OTPs not just text it also don't load. I also tried disabling the spam protection and i only use minimize to tray extension which i disabled to check if image loads or not ans tried to run it in Troubleshoot mode but no luck. I will really appreciate If anyone could help me and fixed the issue . :)

Thanks.

Hi folks

When I tried to start up Thunderbird this evening, it has taken me to a set-up page. I seem to have lost all the settings, all my previous (about 3000 !) e-mails in my Inbox.

I obviously don't really want to set it all up again, but it has been working for years without a problem, and then suddenly this happens. I had now a 'warning' message saying that Mozilla Thunderbird wants to make changes to your computer - do you accept? I don't want it to make any changes unless it is to revert back to how it was.

Can anybody help me?

Thanks.

Firefox was updated. I was Hacked. Now I cannot log into my email Provider. Firefox is my default browser. How do I access my email provider via firefox browser now?

Hi,

I’m experiencing the following issue:

When I open Password Manager (about:logins), the page is completely blank.

This problem started about three months ago, after I updated Firefox to a newer version.

Currently, on the about:logins page, I can export all my accounts and passwords as a CSV file (so the data clearly exists), but nothing is displayed on the page itself.

I also tried importing the same CSV file (exported from about:logins) back into Firefox. After importing, all accounts and passwords appear in the left panel. However, when I click on any item, the right panel is still blank. If I close the page and open about:logins again, the items still do not load.

My current Firefox version is 147.0.

How can I solve this problem?

Thanks!

I have been using Thunderbird with two POP3 Hotmail accounts for some time and I am trying to set up a third account with exactly the same configuration. However, both the automatic and the manual configurations failed. The new account receives mail, but the outgoing smtp server config seems to have a problem. Sending messages times out or keeps prompting for a new password.

The Hotmail account has POP3 and IMAP enabled. Thunderbird is set to receive all cookies. I cleared history and cache after every attempt and also temporarily disabled the firewall.

Any suggestions about what the problem could be?

All the application windows I had opened on my Mac, closed due to a security related update. Now Firefox isn't showing any of my tab groups from before and also there's a weird behavior when you click on the Firefox icon, it opens a new window that is small, but when you do file > new window it also opens a window but full sized. I tried creating a new tab group and the second approach of doing file > new window is showing the tab group in the tab group menu, but the window created by doubling clicking the icon doesn't show it.