400 bad request

It means the the Web Server (the site's server) could not understand the request from your browser. Couple things you could do:

1) Make sure you have an internet connection (check Google or some other site that is always up)

2)Clear your cookies and web history

3)Clear SSL State (optional, but sometimes helpful)

If that doesn't work reboot your computer and your internet router.

Let me know how it works for you

my youtude will no let me in my message mox watch videos or go to my youtube profile all it says is 400 bad Request

Clear your browser cache (temporary internet files) & cookie And again try to load you tube.
If that doesn't work, use a different browser. E.g. Firefox, Google Chrome, Opera. NOT IE.
If that doesn't work, then use Proxy.

For an explanation about the "400 Bad Request" visit http://www.checkupdown.com/status/E400.html

it keeps sayin i have 400 bad requests

either your website is down, your .htaccess is blocking or your firewall is preventing access.

Here is why:
http://www.youtube.com/watch?v=za9TzSQcjck

how to get my you tube working again?

I need help

clear browser cookies, and go to the home page www.youtube.com

Go to Tools. Hit Options. Hit the Privacy button. Press "Show Cookies" in the middle of the page. Go all the way down to Youtube.com and double click on it. Click on the first one. It will tell you something in the space called "Content".in the description. On the server problem on You Tube, look at what is says. It will say stuff like :

EXAMPLE:
(First part)ViSITOR_INFO_1KittyKat (Second part)133bd4455...

you look at each cookie description content and find the 2 that match the first and second part of the error.
Delete those cookies. Refresh the page. IT will work find, AND WILL LET YOU LOG IN.

The reason behind the error:
This is something that happens when a user signs in and out of their youtube account constantly or sees many people's channels nonstop.