Hi,
I have configured policy based routing on routerBoard for small internet cafe, he previusly shared printers through window sharing. After installing routerBoard to his network block printer sharing.
i would say it because you are running in 2 different subnets, if you want the nasty work around then bridge the 2 ports on the 750, as it seems like you have different switches for the different subnets, then let the pc’s share via netbios/ipv6 that will make it work, but is really a nasty work around, remember that you can also make address lists 1ip at a time, so you dont need 500+ ip spaces for 20 pc’s you can make an address lists like
source=192.168.0.1-192.168.0.10 name=servers or 192.168.0.0/27 as a list, so consider that.
win7 is especially touchy about devices not in its own subnet.
also, if there is no routing required, then its not the mikrotik stopping the print service, so if you tracert to that printer, and there is just 1 hop aka the printer, then you will not even be passing thru the mikrotik.