I need a c# based licence and upgrade solution for our webprojects... We have commerce and portal applications, they using asp.net and mssqlserver technology running on windows server. This solution must contains, 1- Auto version detection 2- Auto or Manuel (Approve) version upgrade (ASP.NET compiled project and mssql server database) 3- Licence for domain or server and Licence security 4- It must send information for unlicensed version 5- If we want, It must stop the site for unlicensed version 6- a solution for dll decompile... (may be suggestion) 7- backup before upgrade 8- If exist error when process, restore settings 9- Report everything... 10- Compress and encrypted file transfer from server during upgrade... A- you can write this as a library, windows service, web or wcf service... B- it must be c# based C- Simple or Advance documentation but I must understand your code and Way D- This is a server and client based application... Please read the project first and write the word "Understood". Also write your steps and suggestions to complete the project with a short description of what you understood.