In order to be able to access via remote desktop my new client's UI2 SAP Launchpad I needed to modify my internal hosts file in order to map the right hostnames to corresponding IP addresses and therefore gain access. Being a company laptop with countless restrictions, I do not have the administrator rights over my own computer and was directed to start the incident over at IT support desk. That means at least a couple of hours of waiting for them to accept my incident and offer solution. This was not acceptable since I needed access asap. I tried changing the file in a plain text editor and similar simple editors, but was always left with a .txt which made the entire file not functional.