Did you check your port settings? I found some solutions from our KB that you can try HERE.
i want to scan documents from my Xerox Workcentre 6515 (DNI) with Xerox Wlan adapater.
I have try both ways. (SMB and FTP) Ftp with Filezilla Server
Firewall offPorts on (Fritzbox)Permissions ok
Can i can scan general about Xerox Wlan adapter? Thats possible?
But every time the same error