Fix-It Utilities Make your PC run like new! Includes Anti-Virus, Anti-Spyware, hardware diagnostics, registry fixer, and more!
PC Mover Move applications, files and settings from one PC to another. Handles Windows upgrades too, even XP 32-bit to Windows 7 64-bit!
Partition Commander Now it's easy for anyone to safely partition their hard drive! You can reclaim waste disk space, organize files, even add new OSes.
Request contains high-bit characters
Likely the page is was incorrectly built. In this situation, the request contains a character above ASCII 0x7F such as symbols or European characters.
A request is an item in the web page that tells the server special information. For example, it might specify the language to use or authentication information. There are more than twenty different types of requests.
404.12 - URL has high bit characters.
This URL is denied because it has high-bit characters.
Error messages will differ depending on the web server and if replaced by the web site designers.
Frequency is relative to other Internet warnings and errors.
Solutions and Fixes
This issue can only be fixed by the web site owner.
You might notify the webmaster about the issue. Include the error number and the address (URL) where the error occurred along with any other relevant details.
Many sites use an email address in the form firstname.lastname@example.org where you replace sitename.com with the web sites address (don't include a www). Keep in mind with the amount of spam, they may use a different address and/or it might get ignored. Check the websites' contact information to get reliable contact information.
FaultWire Staff Posted: 8-Oct-2008
The request contains high-bit characters, and the server is configured not to allow high-bit characters.
"404.12 - Request contains high-bit characters" is only supported by Microsoft IIS (Internet Information Services) web server version 7 and later.
The four hundred series of errors indicate something was sent to the remote web server incorrectly.
While we believe this information up to date and accurate, FAQware is not responsible for any inaccuracies. If you find something that is out of date or inaccurate, please let us know at
so we can correct it.