All Products Support Forum

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

Hello,

When I go to update Firefox through the settings > general > firefox updates > check for updates, I am getting the error in the title. I can manually download the app installer and update to the most current version which is what I did for version 125.0.1, yesterday.

I have tried uninstalling and reinstalling firefox, installing the beta branch, refreshing firefox, running in troubleshooting mode, completely deleting all user firefox files, and I still get the error. No DNS resolver issues to the update server. No firewall issues. No network blocking (tested with other devices).

This issue started after March update to 124.0.1 and continues to current stable release 125.0.1.

This issue also seems to extend to checking for extension updates.

Below are browser logs for when i try to check for update or update extensions.

App Update Logs: AUS:AUM AppUpdater:check - currentState=STATE_IDLE AUS:AUM AppUpdater:check - starting update check AUS:SVC CheckerService:checkForUpdates - checkType: 2 AUS:SVC CheckerService:checkForUpdates - Making new check request for check id 86. AUS:SVC CheckerService:getUpdateURL - checkType: 2 AUS:SVC CheckerService:getUpdateURL - update URL: https://aus5.mozilla.org/update/6/Firefox/125.0.1/20240416043247/WINNT_x86_64-msvc-x64/en-US/release/Windows_NT%252010.0.0.0.22631.3447%2520(x64)/ISET%3ASSE4_2%2CMEM%3A32702/default/default/update.xml?force=1 AUS:SVC CheckerService:#updateCheck - sending request to: https://aus5.mozilla.org/update/6/Firefox/125.0.1/20240416043247/WINNT_x86_64-msvc-x64/en-US/release/Windows_NT%252010.0.0.0.22631.3447%2520(x64)/ISET%3ASSE4_2%2CMEM%3A32702/default/default/update.xml?force=1 AUS:SVC CheckerService:#updateCheck - request got 'error' event AUS:SVC CheckerService:#updateCheck - Failed. request.status: 2152398919 AUS:SVC getStatusTextFromCode - transfer error: Data transfer was interrupted (please try again), code: 2152398919 AUS:AUM AppUpdater:check - Update check failed; CHECKING_FAILED

Extension Update Logs: 1713382616474 addons.update-checker WARN HTTP Request failed for an unknown reason 1713382616475 addons.update-checker WARN HTTP Request failed for an unknown reason 1713382616476 addons.update-checker WARN HTTP Request failed for an unknown reason 3 1713382616477 addons.update-checker WARN HTTP Request failed for an unknown reason 2 1713382616478 addons.update-checker WARN HTTP Request failed for an unknown reason 1713382616481 addons.update-checker WARN HTTP Request failed for an unknown reason 1713382616483 addons.update-checker WARN HTTP Request failed for an unknown reason 2 1713382616484 addons.productaddons WARN Failed downloading XML, status: 0, channelStatus: 2152398919, errorCode: 2, reason: error 1713382616486 addons.update-checker WARN HTTP Request failed for an unknown reason 2 1713382616487 addons.update-checker WARN HTTP Request failed for an unknown reason 1713382616489 addons.update-checker WARN HTTP Request failed for an unknown reason 1713382616489 addons.productaddons WARN Failed downloading XML, status: 0, channelStatus: 2152398919, errorCode: 2, reason: error 1713382616493 addons.update-checker WARN HTTP Request failed for an unknown reason 2 1713382616494 addons.update-checker WARN HTTP Request failed for an unknown reason 2 1713382616495 addons.update-checker WARN HTTP Request failed for an unknown reason 1713382616497 addons.update-checker WARN HTTP Request failed for an unknown reason 1713382616502 addons.update-checker WARN HTTP Request failed for an unknown reason 1713382616503 addons.update-checker WARN HTTP Request failed for an unknown reason 2 1713382616504 addons.update-checker WARN HTTP Request failed for an unknown reason 1713382616507 addons.update-checker WARN HTTP Request failed for an unknown reason 2 1713382616512 addons.update-checker WARN HTTP Request failed for an unknown reason 1713382616514 addons.update-checker WARN HTTP Request failed for an unknown reason 1713382617489 addons.update-checker WARN HTTP Request failed for an unknown reason HTTPS-Only Mode: Not upgrading insecure request “http://r3.o.lencr.org/” because it is exempt.

Hey, so, I've seen this question a couple times when I searched, but (a) there didn't seem to be any solution and (b) they were all regarding Macs and I'm on Windows 11 v 23H2. I keep getting bubbles saying that Firefox wasn't able to check for updates- not that it couldn't download or install updates, but it couldn't search for one. I also did the "about Firefox" thing and it gives me the same message. Both of these have been going on for a couple days and I have attempted restarting Firefox multiple times and did a manual update [125.0.1 (64-bit)] just in case there was a problem there. Now, I've tried the tips from the other threads (turning off the proxy, checking any anti-update policies, and checking the add.update.url in the config settings) with no luck. So in an effort to either bump the question or get any Windows oriented answers... Thanks muchly

I recently updated to 125.0.1 and now get 'failed to check for updates': - when I manually check (help > about Firefox) (see image) - in 'settings' it also shows 'failed to check for updates' (see image) I never had such a problem with previous versions; any suggestions?

For the past week, my browser does not auto-update. I have to download the update and re-download the browser.

I went into the settings and found the update section and when I clicked "Check for Updates", it kept saying "failed to check for updates". I tried with my proxy-settings on with VPN on, proxy-settings on with VPN off, proxy-settings off with VPN on, proxy-settings on, with VPN off.

This is in my personal laptop, where I am the only and admin profile.

My Firefox used to to auto-update but now it keeps saying I need to download the update, but my browser can't even tell if I have the most current version or not.

Recent issue, April 2024. Had version 124 Firefox on Win10 computer and went to Help - > About to have Firefox check for updates. This has worked just fine up until now. The message "Failed to check for updates." is shown in the About screen. I have uninstalled and re-installed Firefox with the same results. Have also un-installed Firefox, un-installed Mozilla Maintenance, then removed Firefox data from App Data folder in user directory, then re-installed with the same results. Also, now when I access a local media server, I keep getting the message "Firefox is installing components needed" and that never goes away. Any ideas?

I have a new PC. After installing Thunderbird onto my new PC, emails from my old PC are not there. Can these be recovered? I have a copy of my old PC hard drive files but not the actual PC. Thanks Jim Ferrier

yesterday afternoon, I noticed a change in my side bar showing the folders. I checked the junk folder, and it was empty. I had left some emails there. I generally have as many as 30 in there some of which get blocked, but some I need. i looked at settings and it was set to delete junk. I changed to move to junk folder. Today, there is nothing in junk. Also, my sent folder is empty. I use that almost daily. I need my emails back.

Sending of the message failed. An error occurred while sending mail. The mail server responded: <work@email address>: Sender address rejected: not owned by user personal@email address. Please verify that your email address is correct in your account settings and try again.

This message suddenly coming up after a Thunderbird update, and I cannot send messages from my work email because I don't "own" it. How do I fix this?

TIA.

I know i have asked this already but i did not receive an answer of a solution and id really like someone to help me with this. It is a duplicate question but again no answer and id really like one . i want to remove it please do not tell me toget a new profile and lose everything i have. there has to be another way

I have 4 e-mail accounts in TB, and I want to switch from the current default account to another. But how do I do that. I cannot see any button, place where to do that in the settings. Why the heck does TB needs to be so tricky to deal with, compared to Outlook?

I am having issues with Thunderbird not retaining my email server and passwords. Each time I want to send an email, it prompts me for the password and then tells me that the email address and server don't match. I have tried numerous times to correct this, but it doesn't hold the information. It also switches the server info between accounts. I have 3 different email account and sometimes only one works correctly

I have read through the user threads and tried everything I could find including malware searching and, of course, setting google as my search preference but no matter what I try the splash page for Firefox (re-installed twice) is Yahoo. Has anyone found a cure for this issue on their Mac - my Mac parameters are in the attached screenshot.

Thanks for any sage wisdom!

Over the last few weeks, emails have vanished from my inbox, as well as trash, templates and other mail boxes. In may cases, no emails are being displayed, when "total message count" shows messages are present. In other cases, several days of recent messages have disappeared.

I have tried "repair folders," deleting "smart mailboxes' and even deleting the .mlf file of one inbox without success.

I have 6 email accounts including 2 GMail. The problem is in all of them. As the screenshot shows, there is a disparity between total messages and displayed messages in all boxes (partial view of accounts).

""

I'm asking this question on a different browser because Firefox cant load any websites.

Basically whenever i open a new tab, it opens to a crashed tab. Gah. It cant even load google, or any website for that matter, not even the homepage for Firefox, its just a blank page with nothing on it, whenever i type something into the address bar and press enter it just disappears and does nothing. Browser settings work, but stuff like passwords dont, and i have most of my important passwords on firefox, so i cant log into runescape and stuff.

Can you help?

My environment - I am running Thunderbird 115.10.2 (64-bit), and Windows 10. - I have had NO Windows updates for at least two weeks.

The problem - About five days ago, outgoing messages (messages I was trying to send) started taking about 15 to 30 seconds before they were sent successfully.

- Today, I am unable to send messages. I can receive messages.

Actions I have taken 1. I re-installed Thunderbird after using Revo Uninstaller to uninstall it. 2. I contacted my ISP. They checked their settings, and have been unable to detect any error.

Please help!

Kenneth Govias [removed phone# from support forum] (Canada)

When TB starts up, the only folders I can see are Recent. I can go to View/Folders and click ALL, and as soon as I move the mouse away from that menu item, it switches back to Recent. This started on version 115.09, but persists after I've "upgraded" to 115.10.1.

It has now (5/3/24 17:25 CDT) been 2-1/2 days since I submitted this problem, and no one has responded that it has even been noticed, much less solved. One of my two email accounts is a POP3, and the other is IMAP. The IMAP account Inbox doesn't even show up on the TB home screen. (If that info is of any help).

PLEASE ADVISE. My emails are an integral part of my business, and I cannot get to almost any them.

Thanks, rehawkpe

I just asked this question a few minutes ago. This is a correction. It's only the font size in my signature that has shrunk since the latest Thunderbird update. The image in the signature is still the same size as it was before the update. I would like to know HOW to make the signature font size the same as the message font size.

Hi,

First, this is not a complaint. Firefox is an outstanding product that makes me very happy.

I though I could post the following, because this community strives to make it better.

In a nutshell, I have a very fast Internet connection, up to 6Gbs/1Gbs speed, and Firefox is not able to go over .9/.8

I attach are 2 tests, one with Firefox and one with Chrome.

Note that when using it for anything else than speedtest, Firefox does not feel slow at all.

I'm not requesting a fix, just thought that somebody would like to know.