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I get this error message when I try visiting some sites (Bad request, err 400), I have cleared my cache and cookies and even re-installed my firefox.

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  • Posljednji odgovor od cor-el

Ibesoft
Ibesoft
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Bad Request

Your browser sent a request that this server could not understand. Apache/2.2.34 Server at gridserver.com Port 80

Bad Request Your browser sent a request that this server could not understand. Apache/2.2.34 Server at gridserver.com Port 80

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FredMcD
FredMcD
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'err 400' normally means the website does not exist or not available. However,

You may have ad/mal-ware. Further information can be found in this article; https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-caused-malware?cache=no

Run most or all of the listed malware scanners. Each works differently. If one program misses something, another may pick it up.

cor-el
cor-el
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You can remove all data stored in Firefox from a specific domain via "Forget About This Site" in the right-click context menu of an history entry ("History -> Show All History" or "View -> Sidebar -> History").

Using "Forget About This Site" will remove all data stored in Firefox from this domain like history and cookies and passwords and exceptions and cache, so be cautious. If you have a password or other data from that domain that you do not want to lose then make sure to backup this data or make a note.

You can't recover from this 'forget' unless you have a backup of involved files.

If you revisit a 'forgotten' website then data from that website will be saved once again.

If clearing cookies didn't help then 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 if 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 -> Troubleshooting Information" (about:support) page to go to the current Firefox profile folder or use the about:profiles page.