GetFiles from a network path

You can do this the same way you would from a windows application. The difference is that a windows application runs as the user that you logged into windows with. A webservice runs under different credentials and is actually a completely different user than the one that logged into windows. How you fix this depends on how your security is set up under IIS. If you are using anonymous user access, you could just change the anonymous user login and that is the login that should have rights to the UNC you provide. If you are using authenticated access (which you should be), then it matters if the user is a domain user, local user, and if the machine is on a domain or not. If this is a domain user, just add permissions for that user on the domain that the remote servers are on. If this is NOT a domain user, you have to import the user onto every remote machine that the user may try to access via the web service. Your Web.Config file specifies which authentication method you're using, I think.