My laptop which is connected by wifi has no ethernet connection...so no...
I suspect you mean 'has no ethernet port'.
I use the IP adresses of the secondarary PCs in the configure pane of the Prime PC. One of the second PC is a laptop connectes on the network via wifi the others via ethernet cable.
'The others' you mention, I suspect they are other MP Secondaries and all work fine, it's just the Wifi PC that has an issue, yes?
If true, logic dictates that your Wifi is not working as well as it should.
Have you considered or tried rebooting your wifi router?
Do you perhaps have a USB to Ethernet adaptor you can test with?
Sean Drohan
Stardock Product Lifecycle Manager