Gach Táirge Community Forum

Create custom DNS providers list to "DNS over HTTPS" "Choose provider" menu (Settings > Privacy & Security - DNS over HTTPS) This can be applied to any Mozilla based browser.

1. Write about:config in url-bar and press [Enter].

2. In the "Search preference name" box Find the "doh-rollout.provider-list" value.

2.a. Create it if not exist by choosing: "String" value and press "+" (add). 2.b. On the right side of the value, Write the '*one string code'. - (if a code already exist, select all code [Ctrl+A] & copy [Ctrl+C] and paste [Ctrl+V] in a notepad and Save it so to keep backup with the previous setting.)

The '*one string code': [ { "UIName": "Cloudflare: Mozilla uri: (https://mozilla.cloudflare-dns.com/dns-query)",

   "uri": "https://mozilla.cloudflare-dns.com/dns-query"  },    

{ "UIName": "Cloudflare: No Filtering uri: (https://cloudflare-dns.com/dns-query)",

   "uri": "https://cloudflare-dns.com/dns-query"  },    

{ "UIName": "Quad9: No Malicious blocking uri: (https://dns10.quad9.net/dns-query)",

   "uri": "https://dns10.quad9.net/dns-query"  },    

{ "UIName": "LibreDNS: No Filtering uri: (https://doh.libredns.gr/dns-query)",

   "uri": "https://doh.libredns.gr/dns-query"  },    

{ "UIName": "Wikimedia: No Filtering uri: (https://wikimedia-dns.org/dns-query)",

   "uri": "https://wikimedia-dns.org/dns-query"  },    

{ "UIName": "DNS4All: No Filtering uri: (https://doh.dns4all.eu/dns-query)",

   "uri": "https://doh.dns4all.eu/dns-query"  },    

{ "UIName": "Mullvad: No Filtering uri: (https://dns.mullvad.net/dns-query)",

   "uri": "https://dns.mullvad.net/dns-query"  },    

{ "UIName": "OpenDNS: No Filtering uri: (https://doh.opendns.com/dns-query)",

   "uri": "https://doh.opendns.com/dns-query"  },    

{ "UIName": "--------------------------------------------------------------------------------",

   "": ""  },   

{ "UIName": "Cloudflare: * Malware blocking uri: (https://security.cloudflare-dns.com/dns-query)",

   "uri": "https://security.cloudflare-dns.com/dns-query"  },    

{ "UIName": "Cloudflare: * Malware & Adult content blocking uri: (https://family.cloudflare-dns.com/dns-query)",

   "uri": "https://family.cloudflare-dns.com/dns-query"  },    

{ "UIName": "Quad9: * Malware blocking uri: (https://dns.quad9.net/dns-query)",

   "uri": "https://dns.quad9.net/dns-query"  },    

{ "UIName": "LibreDNS: * Adblocking uri: (https://doh.libredns.gr/noads)",

   "uri": "https://doh.libredns.gr/noads"  },    

{ "UIName": "AdGuard: * Ad-Blocking uri: (https://dns.adguard.com/dns-query)",

   "uri": "https://dns.adguard.com/dns-query"  }    

]

You can modify the code based on your preferences to change the "Choose provider" menu list.

Hi everyone, I am using a MacBook Air M3 with 8GB of RAM. Due to my workflow, I heavily utilize multiple windows simultaneously across both Brave and Firefox. Unfortunately, this heavy usage has caused my CPU and RAM demand to go through the roof.After doing some research, I was advised to switch back to Safari as my default browser to conserve system resources, and to use other browsers only as secondary tools.

To make this transition work, I need to prevent Firefox from automatically launching every time I start up my laptop. I do not want Firefox to open until I explicitly choose to launch it myself. I have searched through every conceivable setting, option menu, and help file, but I cannot find a solution to this basic issue. If I cannot find a way to stop this auto-start behavior, I will be forced to uninstall Firefox altogether, which I would prefer to avoid.How can I definitively stop Firefox from opening automatically on system boot?

Thank you for your help.

When I try and open any link on an email I get an error message: "This file does not have an app associated with it to perform this action. Please install an app or if one is already installed, create an association in the Default Settings page". This occurred from start up this morning.

I tried the Toolbar fixes in this forum and got the menu to show up, thank you. (Any menu in Compose mode had disappeared. Actually, both Firefox and Thunderbird icons on desktop and Taskbar had disappeared as well, and I had to reinstate shortcuts. This may or may not be pertinent.)

But when I try to add "Send" to the menu, using customize, the "Send" icon is nowhere to be found as an option, so I cannot add it to the Toolbar in Composition mode. "Send" is grayed out in all bold textmenus. If I use Ctrl-Enter, message does get sent. Using Windows 10, still. Perhaps this is an upgrade issue?

On two different Windows machines, current Firefox (153.0.1), the alt-d shortcut stops working: it does nothing until I restart Firefox. Then it works again for a while. I've tried about:keyboard and it's not reset there. I tried all combinations: Clear, Reset, setting it to alt-d explicitly. None of those worked. But when I set it to alt-a, that worked--but then resetting back to alt-d again didn't work. That shortcut is muscle memory at this point, so it's quite distressing. Not sure what diagnostics might be available to help here, happy to try anything.

Full disclosure: Both machines are Windows 10 but since that's stable, I find it hard to believe that's related.

Most of my buttons have disappeared except the send button, which doesn't work. Online help is confusing or doesn't fix the problem. I'm ready to move to a different platform. Why is this so difficult?

Hi, I have 2 Local Folders and an additional Local Folders1 folder. I need tol remove two of them so my Msg Filters work properly. Do I need to edit an additional file inn my Proffile folder? Need some guidance please. Am I not following rules and guidelines? Thanks

Disabled in a nursing home.

Bonjour, Je vous promets que je vous fais un don dès que vous aurez mis fin à votre publicité mensongère à propos des Dossier récents : ils ne sont jamais triés par ordre alphabétique, quelque soit le paramétrage demandé.

Since some time my standard number of print copies in Thunderbird has changed from 1 into 2. I have to adapt this number each time I print. How can I change this back?

I cannot get the Subscribe function to do anything. I would like it to hide, in my Folder List, some of the extraneous folders that are present either as Mozilla defaults or AOL Mail flow-down folders.. From what I read, like a number of folks have simila or nearly similar duplicate Trash/Deleted Items, Sent/Sent Items & two labeled Drafts, albeit one's properties identify it differenet from its Drafts label as Draft (singular) while the other's properties identify it as labeled, Drafts.

For a cleaner Folder List appearance, I wish to hide the unused folders from the Foder List, I have the desired Sent, Drafts & Trash folder desitnations mapped in the TB Server settings, etc. (I assume there is only one avenue for this), thinking the unused foldes would then be available to be hidden. However, deselecting unwanted folders in Subscribe has never done anything, to any folder. When I return to the Subscribe window again, the deselected folders have been reselected.

I've seen a lot of messages here with many different suggesed remedies, but haven't found any one yet that was reported as being successful. Is there one?

Matt

Running "Mozilla Thunderbird v115.18.0 (64-bit)" on my Windows 7 laptop. I want the Inbox to display "Headers" such as "Date", "Size", etc. But I cannot seem to make this happen. Please help me. Thank you, Ron

I spend the last hour or so in sheer panic and doubting my sanitiy as an email I was just reading disappeared from every mailbox I have here (I have 8 mailboxes in Thunderbird) . Also for whatever reason search is missing from the title bar.

The email was "archived" by Thunderbird inthe "Local Folders" I never use local folders as local folders is silly in 2026 imo. I have my own mailserver which is perfectly save and backuped and stuf I don't need yet another location were mail can hide.

Anyway that was a bit of a rant. This would not have happend if this sille ¨Local Folders" didn´t exist at all. But I seem unable to get rid of it.

How do I remove ¨Local Folders" from Thunderbird?

My email, which was formerly with Comcast, now has Yahoo Mail as its back end. Yahoo Mail allows remote contact, and when I logon to my browser, it displays all the photos inline . In Thunderbird, it does not, and collects them as attachments at the end. I have set Thunderbird to Allow remote content ... and have no exceptions entered. I've tried different formats, including Don't allow ... with the photo stream as an exception, but that doesn't work either. The Don't allow option displayed the yellow banner etc -- on practically every email I received -- including a login to Mozilla!

I really dislike Yahoo Mail, so am hoping there's a Thunderbird solution so that I can see this email every week. Thanks, Chris

Subject: Persistent Column and Folder Layout Issues — Not Being Saved Between Sessions

This is a follow-up to my previous support requests regarding two ongoing problems that significantly impact daily usability.

Column Settings I manage multiple accounts, and my preferred column layout is: Starred, Read Status, Attachment, Subject, From, and Date/Time. I do not use Threads, Correspondents, or Spam Status columns. Despite setting these preferences repeatedly, Thunderbird fails to retain them. Every day I must spend time reconfiguring columns across some or all of my accounts — the state varies unpredictably from one session to the next. This is a persistent, daily frustration that costs meaningful time. Most other major email clients save and reliably maintain column preferences. I'd expect Thunderbird to do the same.

Folder Panel Layout Two problems occur regularly when Thunderbird loads:

Folder order — Standard system folders (Inbox, Sent, Drafts, All Mail, Trash, Spam) should appear at the top of each account. Instead, Sent, All Mail, Trash, and/or Spam are frequently scattered among custom folders, with no apparent consistency.

Folder expansion — Most or all folders load in an expanded state, exposing every nested sub-folder regardless of whether they contain unread mail. This creates unnecessary visual clutter and requires manual collapsing each session.

Again, this behavior is uncommon in other widely-used email clients. Summary These are not one-time glitches — they recur daily and represent a significant usability gap. I'd appreciate confirmation that these are known issues being tracked, or guidance on a reliable fix. Reformatting the interface every morning is not a reasonable expectation for users.

I just now saw an archive folder in Thunderbird containing 45 messages that I have either deleted or were still in my .Inbox. Actually, I have never archived any message in Thunderbird. I haven't touched any of the settings to put this auto-archiving into play. I delete messages and compact folders. on a fairly regular basis to reduce the clutter. There was also a new Inbox sub-folder marked 2026 that I had not created and don"t particularly care about having. These changes are "un-arranging" my folders and messing with my system. Anybody have ideas how this happened, and how I can prevent it from happening again? Many thanks. Your help will be appreciated.

Thunderbird just updated and the next time I opened it all of the folders I created and the emails I'm storing within them are missing. I found my profile as directed. I'm not sure if I have a backup of it. I've included the screenshot as you ask for. I know that those folders and emails are there as I was playing around with the the 3 lines > View and when I moved between the different choices I saw my folders/emails are all in there.

Any assistance you can provide is appreciated!