System.DirectoryServices is not recognised in the namespace 'System'

Question

I\'m trying to use System.DirectoryServices in a web site project and I\'m getting this error:

The type or namespace name \'DirectoryServices

Answer 1

Is the web-server (IIS or whatever) configured to run the folder as an application (i.e. shows as a cog), and is it using the correct version of ASP.NET? If it is running as 1.1, bits of it might work - but it would fail to find that 2.0 assembly in the 1.1 GAC.