I have numerous PCs that I am installing Adobe Acrobat Pro DC that are NOT connected to the internet, will NEVER be connected to the internet and can NEVER be connected to the internet. I purchased numerous copies of my software (on DVD) from a reputable large IT company. I have loaded the software onto my standalone machine(s) and I enter the serial number printed on the Adobe DC box. The software loads and then it asks me to activate. I can ONLY do the Offline activation. It brings me to the screen with the request code and gives me an web address of www.adobe.com/go/getactivated.