Has anyone ever done an offline install of CDGS 21? I am wanting to install onto a PC that cant and will never touch the internet and getting answers from the support people is painful. I just need to know if it is doable.
I don't think it can be done. The install needs to check you hqven't installed too many copies and that you have a valid licence :-(
No.
You need an enterprise license. The procedure is explained in the Deployment Guide: https://kb.corel.com/en/128403