I posted this issue on the Microsoft Community forum and they recommended that I post my query in the TechNet forum.
In summary, here is my tale of woe:
As of last weekend, I can no longer access my Buffalo Linkstation NAS from my laptop with Windows 8.1 over wifi. I upgraded to Win 8.1 several months ago and everything has been working just fine until a few weeks ago (March 23). The problem is that the NAS appears by name in the network, but when I click on it it cannot be found and I get error 0x80070035, path not found. After spending several days looking for a solution, I restored my laptop to a restore point about two weeks earlier and everything started working again. It's been working fine until this weekend (April 5), now the same problem is back.
I can browse it via its IP address, I can access the DHCP table in my router (Linksys WRT54G) and I can see the Linkstation listed there. I turned off my firewall (Symantec Endpoint) and I still get the same results. The Linkstation does show up as a media device and I can access all of my media.
I can ping the NAS using its IP address, but if I ping it using its hostname, it cannot find it. I get the same results when I plug my laptop into the router. I can ping the NAS hostname from my Windows 7 PC without any problems. I can also browse my PC from the laptop without any problems. DHCP for the NAS just doesn't work on the laptop. Since I can ping the NAS via its IP address but not its name, my laptop has a DNS problem. Any troubleshooting help would be greatly appreciated.
It was suggested that I try the following suggestions but nothing here worked:
http://social.technet.microsoft.com/Forums/windows/en-US/17c9ea7d-52df-4ef9-95fa-0a961d11bfa3/fix-for-cannot-access-nas-drives-sharefolder-is-not-accessible-or-error-code-0x80070035?forum=w8itpronetworking
If this helps, here is what I get from IPCONFIG /ALL:
Windows IP Configuration
Host Name . . . . . . . . . . . . : laptop
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Peer-Peer
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
Wireless LAN adapter Local Area Connection* 4:
Media State . . . . . . . . . . . : Media disco
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft H
Physical Address. . . . . . . . . : 24-FD-52-13
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Wireless LAN adapter Local Area Connection* 2:
Media State . . . . . . . . . . . : Media disco
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft W
Physical Address. . . . . . . . . : 24-FD-52-13
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Wireless LAN adapter Wi-Fi:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Realtek RTL
I-E NIC
Physical Address. . . . . . . . . : 24-FD-52-13
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IPv4 Address. . . . . . . . . . . : 192.168.1.1
Subnet Mask . . . . . . . . . . . : 255.255.255
Lease Obtained. . . . . . . . . . : Friday, Apr
Lease Expires . . . . . . . . . . : Sunday, Apr
Default Gateway . . . . . . . . . : 192.168.1.1
DHCP Server . . . . . . . . . . . : 192.168.1.1
DNS Servers . . . . . . . . . . . : 68.94.156.1
68.94.157.1
NetBIOS over Tcpip. . . . . . . . : Enabled
Ethernet adapter Ethernet:
Media State . . . . . . . . . . . : Media disco
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Qualcomm At
ernet Controller (NDIS 6.30)
Physical Address. . . . . . . . . : 00-8C-FA-4B
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Tunnel adapter isatap.{F28B5C86-CBDC-49F9-9C01-FF4
Media State . . . . . . . . . . . : Media disco
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft I
Physical Address. . . . . . . . . : 00-00-00-00
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
Tunnel adapter Local Area Connection* 14:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Teredo Tunn
Physical Address. . . . . . . . . : 00-00-00-00
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv6 Address. . . . . . . . . . . : 2001:0:5ef5
erred)
Link-local IPv6 Address . . . . . : fe80::10b2:
Default Gateway . . . . . . . . . : ::
DHCPv6 IAID . . . . . . . . . . . : 167772160
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01
NetBIOS over Tcpip. . . . . . . . : Disabled