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400 Bad Request

  • 3 replies
  • 0 have this problem
  • 10 views
  • Last reply by cor-el

aart2
aart2
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I often (daily) log into "NIKONIANS.ORG", now the webpage will open but as soon as I try to access any of the pages I get a bad request. At long last I open "Edge", no problem.

I often (daily) log into "NIKONIANS.ORG", now the webpage will open but as soon as I try to access any of the pages I get a bad request. At long last I open "Edge", no problem.
Attached screenshots

All Replies (3)

Dropa
Dropa
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Did you restart the computer and try the same process again?

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
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This issue can be caused by corrupted cookies.

  • check the permissions for the domain in the currently selected tab in "Tools -> Page Info -> Permissions"

Clear the Cache and remove the Cookies for websites that cause problems via the "3-bar" Firefox menu button (Settings).

"Remove the Cookies" for websites that cause problems:

  • Settings -> Privacy & Security
    Cookies and Site Data: "Manage Data"

"Clear the Cache":

  • Settings -> Privacy & Security
    Cookies and Site Data -> Clear Data -> [X] Cached Web Content -> Clear

Start Firefox in Troubleshoot Mode to check if one of the extensions ("3-bar" menu button or Tools -> Add-ons -> Extensions) or if hardware acceleration or if userChrome.css/userContent.css is causing the problem.

  • switch to the DEFAULT theme: "3-bar" menu button or Tools -> Add-ons -> Themes
  • do NOT click the "Refresh Firefox" button on the Troubleshoot Mode start window
cor-el
cor-el
  • Moderator
  • Top 10 Contributor
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If clearing cookies doesn't help, it is possible that the cookies.sqlite file in the Firefox profile folder that stores the cookies got corrupted.

  • rename/remove cookies.sqlite (cookies.sqlite.old) and when present delete cookies.sqlite-shm and cookies.sqlite-wal in the Firefox profile folder with Firefox closed in case cookies.sqlite got corrupted.

You can use the button on the "Help -> More Troubleshooting Information" (about:support) page to go to the current Firefox profile folder or use the about:profiles page (Root directory).