System.Diagnostics.Process Issue

System.Diagnostics.Process Issue

I migrated the ASP C# based website from old server to new server, all the
features of website works fine on new server, but this one feature
System.Diagnostics.Process proc =
System.Diagnostics.Process.Start(@BatchFile)
does not the kick start the batch file.
I made: IIS admin account as Local account and Interacts with desktop. ASP
net account - I assigned local administrator account IUSER account - made
it as local administrator
Can some one please suggest what else I am missing.