This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

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

Lolu chungechunge lwabekwa kunqolobane. Uyacelwa ubuze umbuzo omusha uma udinga usizo.

FF 4.0.1 gets Bad Request - Invalid Verb [HTTP Error 400. The request verb is invalid.] on MSDN when ESET Node32 installed

  • 2 uphendule
  • 9 zinale nkinga
  • 1 view
  • Igcine ukuphendulwa ngu CodeSlinger

more options

FF 4.0.1 gets "Bad Request - Invalid Verb" [HTTP Error 400. The request verb is invalid.] on MSDN when ESET Node32 installed.

I have the latest version of ESET Nod32 installed [4.0.417.0] and always get this error with this and the previous beta version of FF4 unless I disable Nod32 "Web Access Protection". This does not happen with IE9. OS is Windows 7 x64 and is up to date. This has happened since I installed V4 of FF last November. I have tried everything I can think of but only disabling Nod32 web access protection allows MSDN to work. Other sites are fine.

This happens merely going to http://msdn.microsoft.com

FF 4.0.1 gets "Bad Request - Invalid Verb" [HTTP Error 400. The request verb is invalid.] on MSDN when ESET Node32 installed. I have the latest version of ESET Nod32 installed [4.0.417.0] and always get this error with this and the previous beta version of FF4 unless I disable Nod32 "Web Access Protection". This does not happen with IE9. OS is Windows 7 x64 and is up to date. This has happened since I installed V4 of FF last November. I have tried everything I can think of but only disabling Nod32 web access protection allows MSDN to work. Other sites are fine. This happens merely going to http://msdn.microsoft.com

Okulungisiwe ngu CodeSlinger

All Replies (2)

more options

This issue can be caused by corrupted cookies.

Clear the cache and the cookies from sites that cause problems.

  • "Clear the Cache": Tools > Options > Advanced > Network > Offline Storage (Cache): "Clear Now"
  • "Remove the Cookies" from sites causing problems: Tools > Options > Privacy > Cookies: "Show Cookies"
more options

@Cor-el - thanks. I have tried this in the past and it did not work. I did however install the latest version of Nod32 last night and the problem seems to have gone away. I had tried uninstalling/reinstalling in the past which also did not work for longer than 5 minutes. Eset must have had a bad version and the new version fixed the issue even though they claimed they did not have any issues. Dave