Firefox prevents me from going to a website I have gone to for years - Error 400 comes up.
I go to many websites during the day and never have a problem. I go to Schwab.com and a Firefox tells me there is a problem with that website (not according to Schwab, where I have been a client for 30 years). It mentions something about a "certificate requirement" and I go ahead and give Firefox approval to access Schwab
Additional System Details
- Next Generation Java Plug-in 10.11.2 for Mozilla browsers
- NPRuntime Script Plug-in Library for Java(TM) Deploy
- Shockwave Flash 11.5 r502
- Adobe PDF Plug-In For Firefox and Netscape 11.0.01
- The QuickTime Plugin allows you to view a wide variety of multimedia content in Web pages. For more information, visit the QuickTime Web site.
- iTunes Detector Plug-in
- McAfee MSS+ NPAPI Plugin
- Adobe PDF Plug-In For Firefox and Netscape 11.0.0
- Google Update
- BlackBerry WebSL Browser Plug-In
- Musicnotes Viewer plugin 1.18.9 For more information visit www.musicnotes.com
- User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:18.0) Gecko/20100101 Firefox/18.0
There shouldn't be a problem with the certificate from the www.schwab.com site.
Check the date and time in the clock on your computer: (double) click the clock icon on the Windows Taskbar.
Try to rename the cert8.db file in the Firefox profile folder to cert8.db.old or delete the cert8.db file to remove intermediate certificates that Firefox has stored.
If that helped to solve the problem then you can remove the renamed cert8.db.old file.
Otherwise you can rename (or copy) the cert8.db.old file to cert8.db to restore the previous intermediate certificates.
Firefox will automatically store intermediate certificates when you visit websites that send such a certificate.
You can use this button to go to the Firefox profile folder:
- Help > Troubleshooting Information > Profile Directory: Show Folder