They both have the same problem since this last update, I can no longer access the shared drives from Windows.
When I try to go into them, where it would normally just ask me for the User&Pass and let me in, I get a pop up that says:
"An error occured while reconnecting N: to
\\NAS-TS-832X\Movies
Microsoft Windows Network: The local device name is already in use.
This connection has not been restored."
With only the option to hit Ok.
If I go into Qfinder I can see both of them on the list and I go into the details, config, recource monitor etc. just fine and can login to both through Firefox.
I disconnected one of the shared drives and tried to re-map it but that didn't work, when I every I try I have to enter the User&Pass and I get an error saying:
"Cannot log into the device shared folder. Please check the network connection or username and password, and make sure the device has been started."
I'm not the most technical when it comes to this unfortunately, so a couple reboots and trying to disconnect and re-connect are about as far as I can go with any confidence

Edit: Found that if I type the IP address of the NAS into Windows Broswer it will allow me into my files?
Edit2: Reseting the router does nothing, allows me to use it "normally" untill I need to restart the NAS then it just goes back to doing this stupid thing again.