With Windows 7 and IE 11 I access EWS via the desktop Printer Assisrtant. The Officejet 6500 E710n-z printer is running firmware version CIP1FN1126AR. I can enter information such as date and time or a DNS server IP, but when I click "save", I get an error message, e.g.: "An error has occurred. (dateTimePage-400) Click "OK" to go back.". I have all the firewall ports open that are listed in the users manual on the controlling PC, and I can change some settings, such as adding a fax number. Any thoughts on why I cant change time or Manual DNS settings?
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