youtube question (youtube question)?

If "your browser sent a request that this server

couldn't understand" + "size of request header

field exceeds server limit", then your particular

"request" might be a bad or supersized cookie.

(The same thing is true for "Error 400" codes.)

For some very odd reason, it seems that 9 out

of 10 error messages like these involve Firefox.

Simply delete all your cookies, and everything

should be fine. Don't worry about getting rid of

them; nothing bad will happen. You won’t lose

any of your internet browser's "Bookmarks" or

"Favorites". The worst thing that will happen is

that you'll be prompted to type your username

and password again when you revisit YouTube

and a few other websites -- that's all.

While you're erasing your cookies, you should

also delete your "temporary internet files" plus

your "history", to make your computer fresh in

YouTube's eyes. It's also best if you shutdown

and then reboot:

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

maybe someone blocked youtube on your pc.