Lacerte? or DMS? 

You need to go to the windows device settings and delete the old one. 

Please do not be offend of where this help is from. I am one of the dummy seniors.

https://www.dummies.com/computers/for-seniors-how-to-change-scanner-settings/

Here is some help with DMS scanner. https://proconnect.intuit.com/community/help-articles/help/dms-does-not-recognize-a-new-or-existing-...

You can also click ARTICLES in the search for SCANNER https://proconnect.intuit.com/community/forums/searchpage/tab/message?advanced=false&allow_punctuati...