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Have cleared browser cashe and rebooted, all to no effect,so how can I complete an upload of requested information if I can't get through and keep getting the 403 error message?

i keep getting this message for last 2 weeks

Looks like there’s a problem with this site

The server at vlaq11.site sent back an error: 429 Too Many Requests What can you do about it?

   Check to make sure you’ve typed the web site address correctly.
   The site could be temporarily unavailable or too busy. Try again in a few moments.

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 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)

I am trying to log onto the Terminix website but I keep getting an HTTP 400 error on regular tabs. I can get to the website using private tabs. The error says "Headers or Cookies are too big." How do I get past this error?

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?

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

There is a site I visit regularly that will not connect. I get an error 429 code. This doesn't happen with any other site I've used recently, and I can access the site with my iPad. I've tried clearing cookies and restarting the computer, but still can't get to this site. Any ideas?

Getting around 20ms for DNS lookups so thats not the issue. Why do I see Error Code: NS_ERROR_OFFLINE maybe once every several days when this Firefox has never been in offline mode and never will be? Env is MacOS 26.5.2 with current Firefox installed.

I posted a question to the community forum and received a reply from JBR. When I try to respond to the reply, I get this error message

Looks like there’s a problem with this site

The server at support.mozilla.org sent back an error: 406 Not Acceptable What can you do about it?

   Check to make sure you’ve typed the website address correctly.
   The site could be temporarily unavailable or too busy. Try again in a few moments.

I have tried to respond multiple times over the past 24 hours to reply using this URL that appears when I click on the view and reply link in the email.

https://support.mozilla.org/en-US/questions/1584160?utm_campaign=questions-reply&utm_source=notification&utm_medium=email#answer-1821659

How can I get support and communicate with forum members trying to help me since this link does not work?

Thanks.