My home Internet connection was upgraded to optical fibre last year, with an ISP-supplied Aztech FG7003GRV(AC) wireless router. Ever since operating on this router, my laptops which operate on the 2.4GHz band (don't have one sensitive to 5GHz) are no longer able to access the shared folders on my Synology DS413 NAS.
Be it Windows 7 or Windows 8.1, Windows Explorer goes into that stalled loading mode in any attempt to access any shared folder (e.g. \DS413\video) However, accessing the NAS HTTP web interface is perfectly fine.
These computers can totally access each other's network shares, as well other cabled computers. If a laptop is to access the NAS, it must do so by connecting an Ethernet cable.
Since raw TCP/IP communication over the wifi network is fine (pingable, accessible over HTTP), I believe there is something about SMB on port 445 that is going wrong when transported over the wifi network. The problem is, I do not know what that is. How should I further troubleshoot and get to the bottom of this faulty communication line?
\\192.168.x.xx\video