HTTP 400 Bad Request with URL testing informaiton

Hi,

I have installed SAP Content Server 6.40 on Windows 2008 R2 server (64 bit) using IIS 7.5 with MaxDB 7.6:

The installation was completed successfully.

Due to the URL testing information with the following URL http://<servername>:1090/ContentServer/ContentServer.dll?serverInfo

brought the error message like "The webpage cannot be found" with HTTP 400 Bad Request.

My settings are as follows

On Content server I give full permission to content Rep directory

On IIS I have allowed Unspecified ISAPI filters and Extensions.

On Web DAVpublishing not installed

Please could anyone give a hint to solve this issue?

Many thanks

Gauguin