I have a HP 3000s3 that has never worked correctly right out of the box.
First, there is not a firmware upgrade available for this unit
Second the power off and on doesn't fix it
Third, killing the HP scanner 3 process doesn't fix it.
Further - gives the same "The scanner is being used by a remote user. (-9926)" on both HP EasyScan and Preview Import from scanner. Both work fine from the HP m476 MFP I have.
Further, this scanner won't scan a whole page at 300 dpi, but works fine at 240, 400 and other resolutions.
Help!