we have a problem with an ASP.NET 2.0 application running on a Windows 2003 Server (SP1) os with IIS6.0.
When using the page from the local network everything works fine. The same with most of our customer networks.
However when using the page from certain customer networks we receive an HTTP 400 Bad Request error. This occurs on just a few pages when clicking on asp buttons causing a postback.
The IIS logfiles look like this:
2006-07-24 08:54:00 W3SVC221004838 192.168.8.10 POST /kvp/Suggestion.aspx - 80 - 220.127.116.11 Mozilla/4.0+(compatible;+MSIE+6.0;+Windows+NT+5.2;+SV1;+.NET+CLR+1.1.4322;+.NET+CLR+2.0.50727) 400 0 64
The HTTPERR logfile shows the following entries:
2006-07-24 08:54:20 18.104.22.168 14442 192.168.8.10 80 HTTP/1.1 POST /kvp/Suggestion.aspx - 221004838 Timer_EntityBody DefaultAppPool
Any help is appreciated! Thank you!