Repeated "Bad Request" errors after clearing cache, cookies, and cookies.sqlite

I get repeated "Bad Request" errors when submitting forms, logging in/out of sites, etc. I get this on a wide variety of sites. I have tried repeatedly clearing all cache and cookies. And I just tried disabling all my add-ons (only have 4) and then deleting the cookies.sqlite file and this still made no difference.
I am using Mac OS 10.5.8 and Firefox 5.0.1 but I have been experiencing this problem in past versions as well, maybe as far back as the latest firefox 3. My main motivation for upgrading Firefox multiple times was hoping this problem was corrected. It never used to happen, it just started happening all of a sudden. It has never occurred on Safari and I am still able to get any site that doesn't work properly to work on Safari without any problem.
I experience this on many sites. One reliable cause of it is logging out of Facebook.

You did delete all cookies.* files ?
If clearing the cookies doesn't help then it is possible that the file cookies.sqlite that stores the cookies is corrupted.
Rename (or delete) cookies.sqlite (cookies.sqlite.old) and delete cookies.sqlite-journal and cookies.txt, if they exist, in the Firefox Profile Folder in case the file cookies.sqlite got corrupted.
*Help > Troubleshooting Information > Profile Directory: Open Containing Folder
* http://kb.mozillazine.org/Profile_folder_-_Firefox
* http://kb.mozillazine.org/Cookies#Removing_cookies
Create a new profile as a test to check if your current profile is causing the problems.
See Basic Troubleshooting: Make a new profile:
*https://support.mozilla.com/kb/Basic+Troubleshooting#w_8-make-a-new-profile
If that new profile works then you can transfer some files from the old profile to that new profile (be careful not to copy corrupted files)
See:
*http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox

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400 bad request error after Firefox 4.0.1 update

After the latest Firefox update, the browser no longer works. When I try to go to a web site, Firefox sends the URL incorrectly by repeating the url. For example: if I type the url http://my.yahoo.com/, I get the following error:
400 Bad Request
Your browser sent a request that this server could not understand:
my.yahoo.comhttp://my.yahoo.com/ (port 80)

Thank you again for your help. After clearing the cache and cookies, and still having the problem, I uninstalled/reinstalled firefox. I had tried this before, but allowed it to keep my bookmarks, etc.. This time I had it remove everything (this is a check-box when doing the uninstall).
After reinstalling Firefox this time, the problem went away. Thank you for your help. Your comment about the cache and cookies, made me think that removing all information during the uninstall would help, and it did.
I don't know if your second suggestion would have helped, because it is now fixed.
But I believe it was a possibility.

Whenever I load you tube I get a black screen where the video is supposed to be. I have tried clearing Cache, history and cookies but to no avail

I am running latest versions of firefox, flash and using windows 7

Start Firefox in [[Safe Mode]] to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
*Don't make any changes on the Safe mode start window.
*https://support.mozilla.org/kb/Safe+Mode
Try to disable the hardware acceleration in the Flash Player.
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After clearing cache and cookies, my same dropdown list keeps returning when I log in to Facebook.

After clearing cache and deleting cookies, my same dropdown list keeps on returning whenever I log in to Facebook. I need to know how to delete login history.

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"Bad request" errors in Firefox with second user account

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Content-Type is net being set in HTTP header. Server returns 400 Bad Request error.

Hi,
I am trying to access an XML WebService. This service requires the content type of the request to be set to "text/xml". As you can see in the source code, I am setting the req.ContentType property to "text/xml".
However, this content type seems not to be added to the HTTP headers. The server returns a 400 Bad Request error as can be seen in the log.
I've attached a System.Net.trace log and it states:
[Public Key]
Algorithm: RSA
Length: 2048
Key Blob: 30 82 01 0a 02 82 01 01 00 bc 09 30 8a 1e 03 4d 7a ea 16 d3 a8 5e d8 5b 00 c4 8a c5 9f 26 bd 7d d6 cb 8b d0 db bd 93 2d 2b 3b 84 f6 20 79 83 34 67 51 37 21 ea 56 5e 18 d8 a3 db 72 43 0e 14 77 e2 64 cb 07 b6 2a 81 c7 f5 16 dd 19 c7 d9 68 0b 3a 81 5c f0 05 c9 ed 2b 37 00 31 41 37 8b 3a 73 4a 4d ab d7 d8 87 79 35 82 01 97 e3 3c be bb 84 e5 94 bb 87 52 e3 9f b5 fb 3e 33 38 c3 eb 73 42 ee ba 1e c5 4a 33 18 a1 0d 8a d2 10 a8 c5 3....
System.Net Information: 0 : [26780] SecureChannel#31884011 - Remote certificate was verified as valid by the user.
System.Net Information: 0 : [26780] ConnectStream#26966483 - Sending headers
API-VERSION: 1
Host: test.myhost.com
Content-Length: 329
Expect: 100-continue
Connection: Keep-Alive
System.Net Information: 0 : [26780] Connection#3888474 - Received status line: Version=1.1, StatusCode=100, StatusDescription=Continue.
System.Net Information: 0 : [26780] Connection#3888474 - Received headers
System.Net Information: 0 : [26780] Connection#3888474 - Received status line: Version=1.1, StatusCode=400, StatusDescription=Bad Request.
System.Net Information: 0 : [26780] Connection#3888474 - Received headers
0: Content-type
1: text/xml
X-Debug-Token: a810dc
X-Debug-Token-Link: /service/_profiler/a810dc
Connection: keep-alive
Content-Length: 3440
Cache-Control: no-cache
Content-Type: text/html; charset=UTF-8
Date: Tue, 14 Apr 2015 11:07:11 GMT
Server: Apache
...and here's the implementation of the web request:
private void ButtonSend_Click(object sender, EventArgs e)
WebHeaderCollection whCol = new WebHeaderCollection();
whCol.Add("API-VERSION", "1");
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string msg = _textBoxReq.Text;
HttpWebRequest req = (HttpWebRequest)WebRequest.Create(_textBoxURL.Text);
byte[] data = Encoding.UTF8.GetBytes(msg);
req.Method = "POST";
req.ContentType = "text/xml; charset=UTF-8";
req.ContentLength = data.Length;
req.Headers = whCol;
req.GetRequestStream().Write(data, 0, data.Length);
string xml = "";
try
using (HttpWebResponse resp = (HttpWebResponse)req.GetResponse())
using (System.IO.StreamReader sr = new System.IO.StreamReader(resp.GetResponseStream()))
xml = sr.ReadToEnd().Trim();
catch (WebException we)
using (System.IO.StreamReader sr = new System.IO.StreamReader(we.Response.GetResponseStream()))
xml = sr.ReadToEnd().Trim();
_textBoxRes.Text = xml;
Can anyone help?
Thanks,
MiRi

Hi _MiRichter,
Well Done!
Thank you very much for sharing the solution to us.
Best Regards,
Amy Peng
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HTTP 400 Bad Request Error

Application Express 3.1.1.00.09
We have some users who are experiencing what appears to be a browser problem in one of our APEX applications.
When clicking on any button that does an insert or update to the database some users get an HTTP-400 Bad Request error message. The database does not get updated and anything they click on after that shows that message. In most cases we have been able to restore the user’s browser to the default settings and the issue is resolved. However, we were not able to isolate which browser setting is causing the issue. We have seen the issue in IE 6, IE 7 and IE 8.
Here’s the error we see in the Apache server error log (minus the date time stamp and IP addresses):
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Does anyone else have a solution for this? Know what's causing it?

HTTP 400 Bad Request Error from APEX 3.1.1.00.09.
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Apex page item of type: ‘Text area with HTML Editor’.
When a user clicks on a button in the page, everything goes through correctly and there is no error.
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Apex page item of type: ‘HTML Editor Standard’.
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HTTP Error Code 400 Bad Request error when connecting to SQL db

I realized I should move this to a new post since it was a new question...
I am trying to connect to a distributed SQL database from CS4.
Let me show you how the connection is built... and then maybe someone can tell me what I am doing wrong...
First I go to the database panel:
I click on the '+' sign to add an MS SQL Server Connection:
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Thanks,
Mike

You will get a better response if you ask this question on the DW Application Dev forum. This forum mainly covers client-side issues.

Since Firefox updated yesterday I cannot post on my blog - getting 'bad request error 400' message.

When I opened my blog today (more than once) the page came up but after I signed in I got a page up which says 'Bad request error 400' and I am unable to create a message or anything else. When I go back to the blog page there are no options on the top right for new post etc. This was all after Firefox automatically updated.

You're welcome

I cannot update 2 changes to portfolio, get error bad request error 400

I hit edit portfolio and I made a change to the number of share and to cost price per share. I hit enter and get message Bad Request Error 400

Can you make the changes while you are in Private Browsing mode?
In Private Browsing mode any cookies that you have from regular are not accessible.
*https://support.mozilla.org/kb/Private+Browsing
Start Firefox in [[Safe Mode]] to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
*Don't make any changes on the Safe mode start window.
*https://support.mozilla.org/kb/Safe+Mode

Having constant 400 Bad request errors on Yahoo with Firefox 5.0 "optimized for Yahoo"

Every time I attempt to enter a news article on Yahoo's main page I get a "400 Bad Request" error. I have downloaded Firefox 5.0 "optimized for Yahoo" and that still did not solve the problem.
This ONLY occurs on Firefox. I also use Google Chrome and it has no such error problems. Neither does Internet Explorer which I RARELY use.
Please Identify the problem and solution.
I also have problems with Realplayer p[lug ins and Adobe Reader X

This problem is directly related to the way that Safari requires full header information and the way that the individual server concerned is set up to serve and deal with cookie setting; the longer the date set in the future for the cookie concerned, the more likely it is to provoke this error.
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For what it's worth, I do not see the point of setting cookie dates for 2109, 2500 +, or much beyond a couple of years from now.
It would seem some regular organisations do see the point of doing that.
If you list the cookies in the Security/Show Cookies section of Safari preferences, you can see the likely offenders for the site provoking the error, once deleted they will be reset if needed in that session, often as not with newer , closer dates to today's date.

Axis adapter : Bad Request error

Hi,
I have a File to SOAP scenario (PI 7.0) where I am using AXIS adapter in the receiver SOAP adapter for NTLM authorisation. In the xml that I am trying to post, i have characters like & because of which I am getting a Bad Request error. Is there a way to resolve this? thanks!
Regards
Pushpinder

In file sender channel, i am using binary mode, so no encoding specified.
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Error Exception caught by adapter framework: (400)Bad Request
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Why can't I access my Blogger account and publish a blog? I get 'Bad Request Error 400" when I try.

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I was re-decorating my blogger .. then I got the 'Bad Request Error 400' .. I re-formatted my computer, reloaded all .. I can now access my Blogger sites .. Don't know what the problem is/was, but I solved it by reloading my computer to Out-of-Box condition, and all is perfect now .. I have an alert set up for this Error 400 .. Masses of people are having problems daily ..
http://littlemisscinderellasquotes.blogspot.com/

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Thanks.

harvey waxman wrote:
I've since discovered it appears only in Safari on my Mac in the last day or so . A real puzzler. Thanks
In that case your first port of call should be validation. Try this link for css errors:
<http://jigsaw.w3.org/css-validator/validator?uri=http%3A%2F%2Fdinghydogs.com%2F&profile=no ne&usermedium=all&warning=1&vextwarning=&lang=en>
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Is there a size limitation on the detail? FYI - the header regeion is on the same page as the detail. If there is a size limitation, is there a way to increase this?
If you experts don't think the error is a result of the size, could there be another cause?
THANKS FOR YOUR HELP!
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Hi All,
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Repeated "Bad Request" errors after clearing cache, cookies, and cookies.sqlite

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