需要在ASP.net中的服务器中执行* .exe

My current situation is that I need to execute an exe(which creates a local .txt file) in remote server with IIS hosting an ASP.net/C# API. I created a local user(say userA) as admin to run the web service in the remote server but the .txt file was not created. I already checked and granted necessary folder permissions to userA and added the user in various groups. The funny thing is that if i am logged in as userA in the remote system, the exe gets executed as expected. If i log out then it fails. Server is Win server 2008 with IIS 7. Any help would be appreciated thanks.My current situation is that I need to execute