For an upload feature, my .NET application needs to upload a file to a newly created directory. My application is running as a linux service. Whenever the application tries to create a folder and add the file, I get an IOException: An unhandled exception occurred while processing the request. IOException: Permission denied. At first, I though I’d just chmod 777 the /var/bots folder and give full write permissions. It worked, but it would probably not be a viable and secure solution for the long term.