Process.Start(Command, Arguments) does not work on IIS

If you're running from within ASP.NET, are you calling the executable with an absolute path? If you use a relative path, then you will need to call Server.MapPath() as the working directory for ASP.NET apps is the IIS bin directory (I believe) and not the web site's physical location on disk.

I would also check to make sure that your Virus Scan software isn't doing anything to block the exe from running.

I am getting the path from web.config file as follows:

<appSettings>
<add key="HL7FileServerIn" value="\\mywebserver\Orders\"/>
    <add key="MappingCommand" value="\\mywebserver\Inetpub\wwwroot\MyWebsite\AppFolder\bin\Debug\Mapping.exe"/>


//parse message  
        string MappingCommand = ConfigurationManager.AppSettings["MappingCommand"].ToString();   
        string Filepath = HL7FileServerIn + FName;        
        string MappingArguments = " /FileName " + Filepath;
        Process p = Process.Start(MappingCommand, MappingArguments);

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I just changed the Application Pool Properties of IIs to use Local service to try to see if it works. Now I get a different error:
System.ComponentModel.Win32Exception: No network provider accepted the given network path at System.Diagnostics.Process.StartWithShellExecuteEx(ProcessStartInfo startInfo) at System.Diagnostics.Process.Start() at System.Diagnostics.Process.Start(ProcessStartInfo startInfo) at System.Diagnostics.Process.Start(String fileName, String arguments) at WriteORM.WrtieOrderMessage(String MsgID, String FName) in c:\Inetpub\wwwroot\..\..\WriteORM.cs:line 28 at _Default.ParseOrderMessage(Object sender, GridViewCommandEventArgs e) in c:\Inetpub\wwwroot\CSIAccessioning\Default.aspx.cs:line 578  
 
line 28 is         Process p = Process.Start(MappingCommand, MappingArguments);  
line 578 is  calling the method that has the above at line 28. (W.WrtieOrderMessage(MID, FName);)

Thanks

You may have to set "Load User Profile" to true in the IIS app pool settings. Make sure the user which your app pool is running as has permissions to that network path.

How to do that in IIS6.0 (Windows server 2003 R2)?

A couple of observations/questions...
1. Just to be clear calling Process.Start() in the server code is going to run your program on the server itself, not on the computer that's viewing the website.
2. If the program you're starting is on the webserver itself, instead of using a UNC network path try setting MappingCommand to C:\inetpub\wwwroot\MyWebSite\AppFolder\bin\Debug\Mapping.exe.  Or better yet do what kaufmed suggested, set MappingCommand to ~/AppFolder/bin/Debug/Mapping.exe and then use Process.Start(Server.MapPath(MappingCommand), MappingArguments)
3. I notice the path you're trying to execute is \\server\inetpub\wwwroot... - is C:\Inetpub on the server shared as inetpub?
4. Does Mapping.exe have a user interface - i.e. does it show any Windows?

I had suggested using a local path, as opposed to the malformed UNC path, in my comment http:#34089488

Thanks. My issue was resolved before I got that solution.

Fair enough - works for me.  Thanks for updating us...