Allow High Bit Characters in IIS
This feature either allows or rejects all requests to IIS that contain non-ASCII characters. The UrlScan equivalent is AllowHighBitCharacters.
There are two approaches to achieve this
Suppose you want to allow high bit characters for entire server. Then follow below steps:
1. Click on Request filtering
2. Then go to Edit feature settings
3. Tick the allow high-bit characters
Suppose you want to allow high bit characters for one application but not for the entire server.
Set the allowHighBitCharacters="false" in the ApplicationHost.config file; but within the application root, create a Web.config file that allows that single application to accept non-ASCII characters. In the Web.config file, use:
<configuration> <system.webServer> <security> <requestFiltering allowHighBitCharacters="true" > </requestFiltering> </security> </system.webServer> </configuration>