ASP.NET cannot read file: “access to the path … is denied”

[laha]

tl;dr: critical bits are in bold.We have a website page that, when executed, is supposed to read in a series of files, zip them up, and return them to the user.Unfortunately, we are running into an error:\[quote\] ASP.NET is not authorized to access the requested resource. Consider granting access rights to the resource to the ASP.NET request identity. ASP.NET has a base process identity (typically {MACHINE}\ASPNET on IIS 5 or Network Service on IIS 6) that is used if the application is not impersonating. If the application is impersonating via , the identity will be the anonymous user (typically IUSR_MACHINENAME) or the authenticated request user.\[/quote\]My line attempting to access the file currently looks like this:\[code\]using (FileStream x = File.Open(@"\\thedirectory\filename.pdf", FileMode.Open, FileAccess.Read)) { }\[/code\](This line doesn't do anything useful other than try to open the file, since right now I'm just trying to see if I have access at all.)This code works, and opens the file without a problem if I copy the file to a directory on my machine and have the path go there. But if I go to the remote machine where the original file is, no dice.I went down a rabbit hole for a while trying to make sure that whoever the ASP.NET process was running as, that process had permissions to the directory. However, since that wasn't working and I was getting desperate, I have given "everyone" all access rights to the remote directory as a test. Still getting the same error.I'm guessing this is a permissions issue (since that's what it's claiming) combined with the fact that the code works when pointing at a local file. However, since I've already given "everyone" all permissions, I'm lost as to what could be going wrong. Ideas?