For sir COMODO
Have some concern regarding licensing for wincc v4.02. please help me remove demo in my wincc. if you will see in my attachment when i click view details of demo pop up window there is no license or something needs to install or missing item. also please see the authorinformation.inf it's already installed. please help me fix this problem. my client will kill me if i will not remove the demo error.. i've researching for thi for a month and don't have choice but to sign in here and ask you. all the information given in the previous solution is already done still no change. siemens.exe is still mystery to me. i can't find anything regarding this thing?? is this an external software?
looking forward for your response. will give you a big kiss if i solve this thing
Note: attach file is just a visualization of the prob. my project is 100 tags in all
AUTHORS 
SIMATIC WinCC V4.x is compatible with the Windows NT 4.0