Scan for Issues?. As a general practice, good anti-virus and spyware protection should be installed and kept up-to-date. Malware or any other internet traffic related attack can compromise PC security.? In such cases, the malware may corrupt the web traffic sent from your PC, in turn causing a Bad Request error. Defective or incompatible legacy software may cause registry corruption and trigger traffic related problems, if it is a web based application or connects to one.?
For that reason, you should always use up-to-date software from reliable sources. If you use third-party web caching software on your local PC, disable or remove that software and see what happens when you access the URL.
You can troubleshoot DNS issues using the command prompt:. A web host that no longer serves a website may generate a Bad Request Error if a client requests a page from that website.? This could happen if the domain owner has terminated his agreement with a web hosting service, but the DNS record has not been removed or changed. The requests and responses which run between the client and web server include header lines that denote the nature of the data being sent.?
There is no official limitation, but web servers often have their own limitations? If the length of the header in the request exceeds this limit, it triggers HTTP errors. Microsoft have released a hot fix for this issue with the ISA Server software.? You can find it here:.
If you are in a corporate environment, you may be behind a caching proxy server.? IIS 7. Plus, Airbrake makes it easy to customize exception parameters, while giving you complete control of the active error filter system, so you only gather the errors that matter most. Discover the power of Airbrake by starting a free day trial of Airbrake.
Quick sign-up, no credit card required. Get started. Skip to primary navigation Skip to main content Skip to footer The Bad Request Error is an HTTP response status code that indicates that the server was unable to process the request sent by the client due to invalid syntax. Server- or Client-Side? Diagnosing a Bad Request Error A Bad Request Error indicates that the server remote computer is unable or refuses to process the request sent by the client web browser , due to an issue that is perceived by the server to be a client problem.
There are a wide variety of scenarios in which a Bad Request Error could appear in an application, but below are some of the most likely causes: The client may be accidentally or intentionally sending deceptive request routing information.
The client may be uploading a file that is too large. Most web servers or applications have an explicit file size limit that prevents files that are too big from being uploaded and clogging up bandwidth and other resources in the server. In many cases, the server will produce a Bad Request Error when a file is too large and, thus, the request cannot be completed.
The client is accessing an invalid URL. If the client is sending a request to an invalid URL — particularly one that is malformed via improper characters — this could result in a Bad Request Error. The client is using an invalid or expired local cookie. Clear Relevant Cookies As discussed above, one potential cause of a Bad Request Error is an invalid or duplicate local cookie.
Rollback Recent Upgrades If you recently updated the content management system itself just before the Bad Request Error appeared, you may want to consider rolling back to the previous version you had installed when things were working fine.
Look Through the Logs Nearly every web application will keep some form of server-side logs. Debug Your Application Code or Scripts If all else fails, it may be that a problem in some custom code within your application is causing the issue.
Footer Featured Blog Posts. Contact Us. If the error page displays a different HTTP status code to , this results in a soft error. The content type is available in the server response. This status code may get output if the resource has changed. The server response may include the instruction to try again later.
This is usually caused by too many redirects. This could be caused by semantic errors, but not media type errors as is the case with
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