Adobe will not print on my HP Designjet T520 as is says the printer is offline. Drivers and Adobe are up to date. Foxit PDF reader has no issues printing my files but lacks some things i like about adobe. I think there is an issue with your software to not recognize a printer. I would not be saying this if Foxit or other PDF readers had an issue printing on this printer but adobe is the only one who will not see the printer is online.