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i keep getting this message for last 2 weeks

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Hello,

I would like to report an issue with the Firefox Add-ons Store.

Recently, I suddenly encountered an "HTTP 406 Not Acceptable" error when trying to access the Firefox Add-ons Store. The store is completely unusable for me right now.

Here are the specific details:

Issue description: I have tried accessing the store on every network available to me, including mobile data, my office wired network, and my home wired network. Unfortunately, I get the same 406 error on all of them.

Timeline and context: Everything was working perfectly fine last week. I was able to search for and install a Markdown add-on without any issues. However, starting this week, it suddenly started returning the 406 error.

Additional troubleshooting:

I am not using a VPN or proxy. However, if I enable a proxy, the Add-ons Store works normally.

There is no antivirus software or firewall blocking Firefox's network requests.

Other websites load normally. Even mozilla.org works fine, but addons.mozilla.org does not.

I have also tried changing to other DNS resolvers, but that did not help.

Could you please help me understand why this is happening and how I can resolve it?

Thank you!

I have a message all time when i wan't to go to a site serious and secure. The message "Code d’erreur : PR_CONNECT_RESET_ERROR" stop any way to go on and i can't explain this situation. With W10 it was not a problem. Now with W11 i am block. If someoee can tel me how to do please discribe the way to goon. Thank you

Code d’erreur : PR_END_OF_FILE_ERROR With “Mozilla MSIX” : 154.0.1 (64 bits) !!! 154.0.1 (64 bits) In French : Ordinateur Win11 Pro 64b, Ryzen 7 7700, 16GO RAM, depuis nouvelle Mozzilla version 154.0.1, impossible d'ouvrir un lien dans 1 newsletter. Code d'erreur toujours présent et invalidant toute action... Retour vers version ancienne? - Connaissez-vous une solution?

ECRAN : https://www.google.com/url?q=https://www.acdsee.com/fr/free-trials/&source=gmail&ust=1789373797568000&usg=AOvVaw0r97LHaluKcIfsVm_5mGCu

I am running into a 414 error that prevents me from accessing account information in Kindle Direct Publishing, has anyone else run into this problem? I log in and get to the home page of KDP ok, clicking on Account opens dialogue box to log in again, and I get 414 error, which KDP help AI says is browser related. I've tried using incognito, turning off VPN, there are no extensions turned on, going directly to the Account Settings link gives same error. I tried using another browser (Safari) and get same error.

Firefox 155.0.1

Thanks for any other suggestions!

I keep getting a connection failed warning and a new Key that blocks connection appeared after the last Firefox update, which I cannot /have not figured out how to remove or cancel

am experiencing the 'fresh new look' error pages, and am rather annoyed that the raw response code isn't displayed on the initial error page, and must click 'learn more...' to reveal the underlying response code. how can i return the error code to the initial error page and avoid the unnecessary extra click to get at that info?

(ps. i can assure you that by obscuring this basic piece of info, it definitely isn't 'making it clearer what went wrong', despite what the 149.0 patch notes claim)

Wenn ich im Suchfeld etwas eingebe, kommt immer dieser Fehlercode und ich müsse mich an den Administrator der Webseite melden. Obwohl ich sämtliche Virenprogramme verwendet habe und den PC mehrmals runter- und wieder raufgefahren habe, kommt immer wieder dieser Fehler.

I have cleared data and cache and the time is correct but I get, Error Code: PR_CONNECT_RESET_ERROR, and will not log in. I have also done a cold, and hot restarts.

when loading up Google search or try to login to Youtube I get this message Secure Connection Failed

The page you are trying to view cannot be shown because the authenticity of the received data could not be verified. What can you do about it?

The issue is most likely with the website, and there is nothing you can do to resolve it. You can notify the website’s administrator about the problem.

Error Code: PR_CONNECT_RESET_ERROR

After updating Firefox to version 153, my Firefox browser has encountered problems with all subsets of the Google site and gives the following error: Error Code: SSL_ERROR_RX_RECORD_TOO_LONG Can anyone help me solve my problem?

Racenet is a formguide put out by News Corp and subsribed to by mug punters like me but i am unable to download it with the message 403 ERROR the request could not be satisfiedbold text

I had opened a support ticket #447010 with Mozella support and they told me that they can not help me, and sent me here. I am "dead in the water" so to speak. It appears that since Firefox downloaded update 153.0(20260715202819) I have had many issues that appear to be getting worse by the day, and now I cannot open or run my email app. I have not wrote down all the errors (sorry) but here are a couple: 431 Request Header Fields too large, the application is having trouble connecting to the server, unable to load the email from Mozella support. After the update (153.0) my bookmarks have moved to somewhere, the sign on for my email app has changed ( use to click on the firefox icon on the bottom tool bar and the sign in box for optonline.net would be there. I understand that sometimes updates (new and improved) make changes to what users have use to for years. Now is have a browser that is not functional and needs to be corrected, I trust you can help and get this sysem usable again, because right now it is not usable. I presume if and when you respond to me issues it will be at this location and not an email. Please help. Thank you

I must find a way to disallow this undesirable and very annoying feature. It is always there even after removing all the protection I could. Please help

Secure Connection Failed

The page you are trying to view cannot be shown because the authenticity of the received data could not be verified. What can you do about it?

The issue is most likely with the website, and there is nothing you can do to resolve it. You can notify the website’s administrator about the problem.

Error Code: PR_CONNECT_RESET_ERROR