Tech Support Forum banner
Status
Not open for further replies.

"Npcap Loopback Adapter doesn't have a valid IP configuration" Wireless Out

38K views 5 replies 3 participants last post by  CoriDavis 
#1 · (Edited)
Ever since this morning, my computer will not connect wirelessly. I am able to connect through ethernet.

It started when I was at school, and I plugged my computer into an ethernet connection, just for guaranteed stability while taking our online quiz. When I unplugged it, I noticed I had this icon and my computer would not connect to any wireless networks:


When I try to connect to a wireless network, it stays on "Connecting" indefinitely. I tried turning the wireless adapter off and on again, but when I turned it off, the button greyed out and wouldn't let me turn it back on again.

Restarting my computer does not fix the issue either.

I ran the troubleshooter because miraculously that usually solves the problem for me when these things happen, which failed and gave me this information:

"Npcap Loopback Adapter" doesn't have a valid IP configuration - Not Fixed
Investigate router or broadband modem issues - Failed
Reset the "Npcap Loopback Adapter" adapter - Completed


Network adapter Npcap Loopback Adapter driver information:

Description . . . . . . . . . . : Microsoft KM-TEST Loopback Adapter
Manufacturer . . . . . . . . . : Microsoft
Provider . . . . . . . . . . . : Microsoft
Version . . . . . . . . . . . : 10.0.14393.0
Inf File Name . . . . . . . . . : C:\WINDOWS\INF\netloop.inf
Inf File Date . . . . . . . . . : Saturday, July 16, 2016 11:41:53 AM
Section Name . . . . . . . . . : kmloop.ndi
Hardware ID . . . . . . . . . . : *msloop
Instance Status Flags . . . . . : 0x180200b
Device Manager Status Code . . : 0
IfType . . . . . . . . . . . . : 6
Physical Media Type . . . . . . : 0

I've never seen this problem before, and apparently nobody else has either because Google didn't give me any results.
 
See less See more
1
#3 ·
Re: "Npcap Loopback Adapter doesn't have a valid IP configuration" Wireless Out

Here's my ipconfig /all

C:\Users\Cori>ipconfig /all

Windows IP Configuration

Host Name . . . . . . . . . . . . : Cori
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Npcap Loopback Adapter:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Npcap Loopback Adapter
Physical Address. . . . . . . . . : 02-00-4C-4F-4F-50
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::edfe:832d:1971:9744%17(Preferred)
Autoconfiguration IPv4 Address. . : 169.254.151.68(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.0.0
Default Gateway . . . . . . . . . :
DHCPv6 IAID . . . . . . . . . . . : 637665356
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-1C-88-F8-CB-5C-B9-01-7E-55-B1
DNS Servers . . . . . . . . . . . : fec0:0:0:ffff::1%1
fec0:0:0:ffff::2%1
fec0:0:0:ffff::3%1
NetBIOS over Tcpip. . . . . . . . : Enabled

Wireless LAN adapter Local Area Connection* 3:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft Wi-Fi Direct Virtual Adapter #2
Physical Address. . . . . . . . . : AE-D1-B8-3F-7B-3E
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Ethernet adapter Ethernet:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Realtek PCIe FE Family Controller
Physical Address. . . . . . . . . : 5C-B9-01-7E-55-B1
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::c90:55bb:d20d:567b%23(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.1.8(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : Thursday, November 17, 2016 5:02:34 PM
Lease Expires . . . . . . . . . . : Friday, November 18, 2016 5:11:50 PM
Default Gateway . . . . . . . . . : 192.168.1.1
DHCP Server . . . . . . . . . . . : 192.168.1.1
DHCPv6 IAID . . . . . . . . . . . : 56408321
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-1C-88-F8-CB-5C-B9-01-7E-55-B1
DNS Servers . . . . . . . . . . . : 192.168.1.1
NetBIOS over Tcpip. . . . . . . . : Enabled

Ethernet adapter Ethernet 3:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : TAP-Windows Adapter V9
Physical Address. . . . . . . . . : 00-FF-25-A6-EC-B5
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Wireless LAN adapter Wi-Fi:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : hh.nku.edu
Description . . . . . . . . . . . : Realtek RTL8188EE 802.11 b/g/n Wi-Fi Adapter
Physical Address. . . . . . . . . : AC-D1-B8-3F-7B-3E
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter isatap.{92DDA6C4-89CA-43B1-AB38-22077539E233}:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft ISATAP Adapter #2
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter isatap.{F5E2FA16-FC72-4FC0-A826-8CE343059E90}:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft ISATAP Adapter #4
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
Here is a visual of my LANs, and you're right, my Wireless LAN has completely disappeared and been replaced by Npcap.


I did just install GNS3 recently for my Networking class, and it came with several random programs in the installation. I think it might have messed with something.
 
#4 ·
Re: "Npcap Loopback Adapter doesn't have a valid IP configuration" Wireless Out

Disable ncap in lan connections. It shows you are connected by Ethernet but not connected by wifi. After the ncap disable try disable then enable wifi adapter to see if you get a selection of wifi networks.
 
#6 ·
Re: "Npcap Loopback Adapter doesn't have a valid IP configuration" Wireless Out

Disable ncap in lan connections. It shows you are connected by Ethernet but not connected by wifi. After the ncap disable try disable then enable wifi adapter to see if you get a selection of wifi networks.
Looks like this worked. I disabled it, and then when I restarted my computer, I was able to connect to WiFi again.

Hi. I'm the developer of Npcap. Thanks for using Npcap!
Please submit your issue at: https://github.com/nmap/nmap/issues

Thanks!
I have also submitted here. Even though the issue is fixed now, it would be nice to find out why this happened.
 
Status
Not open for further replies.
You have insufficient privileges to reply here.
Top