DelPrinters
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Deleting multiple printers at once with Windows 7 and later
In Devices and Printers you can only delete printers one at a time; if you select multiple printers and right-click, the delete option is removed.
The simple workaround is to use the old-style Printers window which you can open by entering Shell:PrintersFolder
in the Run... box or address bar of an Explorer window.