Youtube Error? Bad Request your browser sent a request that this server could not understand...etc.?

Question

Bad Request
Your browser sent a request that this server could not understand.
Size of a request header field exceeds server limit.


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inukjuak90 · Accepted Answer

If "your browser sent a request that this server could not understand" 
and "size of request header field exceeds server limit", your request
is a bad or oversized cookie. (The same thing is true for "Error 400").

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 "Favorites". 
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 
→ OK

Internet Explorer 7:
→ Tools → Internet Options → Delete...
→ Delete files → Yes
→ Delete cookies → OK
→ Delete history → OK
→ Close (browsing history window)
→ OK

Mozilla Firefox
→ Tools → Clear Private Data
[x] Browsing History
[x] Download History
[x] Saved Form and Search History
[x] Cache
[x] Cookies
→ Clear Private Data Now

Joyce · Answer

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Youtube Error? Bad Request your browser sent a request that this server could not understand...etc.?

2 Answers