I have created asp pages which I want to use instead of the default error on an IIS4.0 machine. The problem I have is with the 401 errors. Using the MMC > Default Website Properties > Custom Errors tab I cannot select URL as the message type for 401 errors. You can for all the rest. This means I cannot run asp code. If I select file and point it to the asp file it doesn't excecute the ASP code. It treats it as HTML.<BR><BR>Any help gratefully appreciated.