Posted in Research IIS 7.5 Detailed Error – 400.0 September 22, 2021 Error Summary HTTP Error 400.0 – Bad Request ASP.NET detected invalid characters in the URL. Detailed Error Information Module ScriptModule Notification SendResponse Handler StaticFile Error Code 0x00000000 Requested URL www.cbmtpt.com:80/fgst.aspx?cid=123&shop=gmod+xbox+one&xi=1&xc=36&pr=42.99&you= Physical Path E:inetpubvhostscbmtpt.orghttpdocsfgst.aspx?cid=123&shop=gmod+xbox+one&xi=1&xc=36&pr=42.99&you= Logon Method Not yet determined Logon User Not yet determined Things you can try: Create a tracing rule to track failed requests for this HTTP status code. For more information about creating a tracing rule for failed requests, click here. Links and More Information The request could not be understood by the server due to malformed syntax. View more information ยป Microsoft Knowledge Base Articles: Read more here: Source link