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CauseThe 400 Bad Request error is an HTTP status code that means that the request you sent to the website server (i.e. a request to load a web page) was somehow malformed therefore the server was unable to understand or process the request.
Check for errors in the URL. The most common reason for a 400 Bad Request error is because the URL was typed wrong or the link that was clicked on points to a URL with some kind of mistake in it.
Though it's rare, the 400 Bad Request error could be an issue with the web site's server that you are trying to access. You may want to attempt to contact the webmaster or another site contact and inform them of the error message. The webmaster of most Internet sites can be reached via email at email@example.com, replacing website.com with the actual website name.
Best thing to do is delete your cookies, if you dont know how do do this its usuall -TOOLS then -INTERNET OPTIONS from your browser menu, there are also lots of guide online that will tell you how to delete your cookies, after you have deleted them you should be able to log on fine
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Hi, If "your browser sent a request that this server could
and "size of request header field exceeds server
limit", your request
is a bad or oversized cookie. (The same thing is true for
For some very strange reason, it seems 9 of
10 Bad Request messages implicate Firefox.
Simply delete your "Cookies" and everything
will be okay. Don't worry about erasing them;
nothing bad will happen. You won't lose your
internet browser's "Bookmarks" or
The worst thing that could happen is you will
be asked to retype your username/password
when you return to YouTube and some other
websites -- that's all.
As you're dumping your cookies, you should
also erase all your "Temporary Internet Files"
and "History". This will render your computer
totally "fresh" in YouTube's eyes. It would be
best if you shutdown / reboot after doing this:
Internet Explorer 6:
> Tools > Internet Options
> Delete Cookies > OK
> Delete Files > OK
> Clear History > Yes
Internet Explorer 7:
> Tools > Internet Options > Delete...
> Delete files > Yes
> Delete cookies > OK
> Delete history > OK
> Close (browsing history window)
How to clear cookies temporarily:
1. Tools > Clear Private Data > Uncheck all but cookies > Clear Private Data Now or
2. Tools > Options > Advanced > Network > Offline Storage (Cache): “Clear Now” or
3. Tools > Options > Privacy > Cookies: “Show Cookies” (specific problem sites)
If you have tried those resolves and are still not satisfied, try A different route:
Right click Start Button > Properties > Select Start menu (not classic) > Apply > Ok
Type %APPDATA% into search box at the bottom of the open start menu.
Goto “roaming” > Mozilla > FireFox > Profiles > should only be one folder left to choose.