Firefox Community Forum

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

I am unable to access email or sign in to optonlinei.net. I opened a ticket with Mozilla support #447010, they responded and I can open the email. A couple of error messages; 431 request header field too large, the application is having trouble connecting to the server..The layout has changed since this update, bookmarks have move some where, start up has changed, clicking Firefox no longer brings up email sign info. Something has really messed something up that once was so nice and convenient. May someone can help or correct. I am running windows 11 on a hp desk top and have run Firefox four years.

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.

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 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.

when I try to access any website I get the same error message

Secure Connection Failed

An error occurred during a connection to support.mozilla.org. PR_CONNECT_RESET_ERROR

Error code: PR_CONNECT_RESET_ERROR

   The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
   Please contact the website owners to inform them of this problem.

attempted to reach this site in my Mac "https://www.copera.org/" and get this error in return. Works when on my iphone no problem. I have in the past been able to reach this site on this same computer so i dont know what has changed or how to fix this issue. Any help would be apprciated.

Error 403 Forbidden Forbidden Error 54113 Details: cache-den-kden1300021-DEN 1778184897 1658880214 Varnish cache server

An error occurred while processing your request.

Reference #97.6e2431a1.1777240233.2bf41b5f

https://errors.edgesuite.net/97.6e2431a1.1777240233.2bf41b5f

Secure Connection Failed

An error occurred during a connection to fafda.to. PR_CONNECT_RESET_ERROR

Error code: PR_CONNECT_RESET_ERROR

   The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
   Please contact the website owners to inform them of this problem.

Secure Connection Failed

An error occurred during a connection to myutiitsl.com. PR_CONNECT_RESET_ERROR

Error code: PR_CONNECT_RESET_ERROR

   The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
   Please contact the website owners to inform them of this problem.

Secure Connection Failed

An error occurred during a connection to m.vk.com. PR_CONNECT_RESET_ERROR

Error code: PR_CONNECT_RESET_ERROR

   The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
   Please contact the website owners to inform them of this problem.

Secure Connection Failed

An error occurred during a connection to myutiitsl.com. PR_CONNECT_RESET_ERROR

Error code: PR_CONNECT_RESET_ERROR

   The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
   Please contact the website owners to inform them of this problem