On Monday September 25th from 10PM EDT - 12AM EDT (2AM UTC - 4AM UTC on September 26th), we will be performing system maintenance on the Firefox Accounts databases for two hours. During the maintenance window, there will be brief periods of a few minutes where users will not be able to login to their accounts. Please try again at a later time.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

404 error

  • 6 replies
  • 1 has this problem
  • 226 views
  • Last reply by FredMcD

more options

getting 404 error only on one site. I have been using this site with FF for 3yrs no problems. Tried safe mode. Tried adding PB_stuff at the end of address. Site still works with Chrome and Windows browsers

getting 404 error only on one site. I have been using this site with FF for 3yrs no problems. Tried safe mode. Tried adding PB_stuff at the end of address. Site still works with Chrome and Windows browsers

Chosen solution

This could be about forcing secure HTTPS on a website that only works with HTTP.

Read this answer in context 👍 1

All Replies (6)

more options
more options

Chosen Solution

This could be about forcing secure HTTPS on a website that only works with HTTP.

more options

the site I am trying to connect to is rcdiy.ca

more options

I turned off avast antivirus program. still no connection

more options

Problem Solved I went to settings and made an exception to "Enable HTTPS-Only Mode in all windows" for the web site that I could not connect to. Now it connects. But what puzzeles me is why did it work for such a long time and then it didn't? Oh well, it works now

Thank you to everyone who took time to offer help and suggestions Roger

Modified by kx8y

more options

That was very good work. Well Done. Please flag your last post as Solved Problem as this can help others with similar problems. Go to that post and click the 'Solved' button to its right.