Windows 8 and 8.1 Forums


Windows 8.1 - cannot see 5Ghz wifi networks

  1. #1


    Posts : 14
    Windows 8.1

    Windows 8.1 - cannot see 5Ghz wifi networks


    Recently upgraded my laptop to Windows 8.1 and I cannot see any 5Ghz wireless networks, even though they are present (I am able to successfully see and connect using other devices including a Windows 7 laptop). I can see 2.4 Ghz networks and connect no problem. I have upgraded the wifi driver to the latest Windows 8.1 version for the Intel Wireless-N 7260 card, v16.6.0.8 but no luck. Appreciate any thoughts or pointers.

      My System SpecsSystem Spec

  2. #2


    It looks like you have the latest driver for the Intel 7260 from the link.
    Intel® PROSet/Wireless Software — Intel® PROSet/ Wireless Software Downloads

    Intel Dual Band Wireless-AC 7260 will have 802.11a and 802.11ac reported by Windows in addition to 802.11 b/g/n radios of Intel Wireless-N 7260, you may not have the dual band version.

    To determine which version you have type or paste the following command into an elevated command prompt then post the results here.

    Code:
    netsh wlan show driver
    Last edited by chev65; 29 Nov 2013 at 11:58.
      My System SpecsSystem Spec

  3. #3


    Posts : 14
    Windows 8.1


    My wireless card for my laptop is advertised as dual band, it's the Intel Dual-Band Wireless-N 7260:
    http://www.intel.com/content/dam/www...ooth-brief.pdf

    The output from the command is:

    Interface name: Wi-Fi

    Driver : Intel(R) Wireless-N 7260
    Vendor : Intel Corporation
    Provider : Intel
    Date : 10/14/2013
    Version : 16.6.0.8
    INF file : C:\WINDOWS\INF\oem99.inf
    Files : 3 total
    C:\WINDOWS\system32\DRIVERS\NETwbw02.sys
    C:\WINDOWS\system32\DRIVERS\Netwfw02.dat
    C:\WINDOWS\system32\drivers\vwifibus.sys
    Type : Native Wi-Fi Driver
    Radio types supported : 802.11b 802.11g 802.11n
    FIPS 140-2 mode supported : Yes
    802.11w Management Frame Protection supported : Yes
    Hosted network supported : Yes
    Authentication and cipher supported in infrastructure mode:
    Open None
    Open WEP-40bit
    Open WEP-104bit
    Open WEP
    WPA-Enterprise TKIP
    WPA-Enterprise CCMP
    WPA-Personal TKIP
    WPA-Personal CCMP
    WPA2-Enterprise TKIP
    WPA2-Enterprise CCMP
    WPA2-Personal TKIP
    WPA2-Personal CCMP
    Open Vendor defined
    Authentication and cipher supported in ad-hoc mode:
    Open None
    Open WEP-40bit
    Open WEP-104bit
    Open WEP
    WPA2-Personal CCMP
      My System SpecsSystem Spec

  4. #4


    From netsh, the adaptor only supports bgn and not a or ac which means it does not support 5Ghz frequency.

    You can see on the web page, the link you posted, it says support for agn but the netsh shows that it only supports bgn.

    It may be a the wrong driver but according to netsh it doesn't support 5Ghz > Radio types supported : 802.11b 802.11g 802.11n

    So perhaps updating the driver would help but from what you said you are already running the 16.6.0.8 although the link I posted shows it as the 16.6.0, not sure if they are different drivers but maybe worth a try.

    Intel® PROSet/Wireless Software — Intel® PROSet/ Wireless Software Downloads
      My System SpecsSystem Spec

  5. #5


    Posts : 14
    Windows 8.1


    I am a bit confused by the array of different drivers for this model, Dell Inspiron 15 7537; I went to the Dell Support website and saw this (supposedly AGN) driver:
    Driver Details | Dell US

    Still do not know what else to try.

    Installed it and generated this output (still no A, just B, G, N):


    Interface name: Wi-Fi


    Driver : Intel(R) Wireless-N 7260
    Vendor : Intel Corporation
    Provider : Intel
    Date : 9/19/2013
    Version : 16.5.3.6
    INF file : C:\WINDOWS\INF\oem99.inf
    Files : 3 total
    C:\WINDOWS\system32\DRIVERS\NETwbw02.sys
    C:\WINDOWS\system32\DRIVERS\Netwfw02.dat
    C:\WINDOWS\system32\drivers\vwifibus.sys
    Type : Native Wi-Fi Driver
    Radio types supported : 802.11b 802.11g 802.11n
    FIPS 140-2 mode supported : Yes
    802.11w Management Frame Protection supported : Yes
    Hosted network supported : Yes
    Authentication and cipher supported in infrastructure mode:
    Open None
    Open WEP-40bit
    Open WEP-104bit
    Open WEP
    WPA-Enterprise TKIP
    WPA-Enterprise CCMP
    WPA-Personal TKIP
    WPA-Personal CCMP
    WPA2-Enterprise TKIP
    WPA2-Enterprise CCMP
    WPA2-Personal TKIP
    WPA2-Personal CCMP
    Open Vendor defined
    Authentication and cipher supported in ad-hoc mode:
    Open None
    Open WEP-40bit
    Open WEP-104bit
    Open WEP
    WPA2-Personal CCMP
    IHV service present : Yes
    IHV adapter OUI : [00 80 86], type: [00]
    IHV extensibility DLL path: C:\WINDOWS\System32\IWMSSvc.dll
    IHV UI extensibility ClSID: {1bf6cb2d-2ae0-4879-a7aa-a75834fbd0e3}
    IHV diagnostics CLSID : {00000000-0000-0000-0000-000000000000}
      My System SpecsSystem Spec

  6. #6


    This driver shows the same type of support.

    Did you try the newer driver from the link I posted or was that the same one as you were using, because the one I posted was dated later at 11-14-2013 and shows dual band support.
      My System SpecsSystem Spec

  7. #7


    Posts : 14
    Windows 8.1


    I did try the driver you pointed me to, but it is the same as what I originally had i.e. 16.6.0.8 dated 11/14.
      My System SpecsSystem Spec

  8. #8


    Posts : 14
    Windows 8.1


    PS: Do you recommend I install the PROSet tools or just the driver? What difference does that make?
      My System SpecsSystem Spec

  9. #9


    Quote Originally Posted by wendelly View Post
    PS: Do you recommend I install the PROSet tools or just the driver? What difference does that make?
    It's seems that other people had the same problem with same results. You can see here that you have the same adaptor with the same support and no way to see 5Ghz signals so according to this it's not the dual band version.

    Has this adaptor ever been able to see 5Ghz signals?


    https://communities.intel.com/thread/45592
      My System SpecsSystem Spec

  10. #10


    Posts : 14
    Windows 8.1


    To my knowledge - the laptop came pre-loaded with Windows 8 - I have never been able to see 5Ghz networks. I guess that would be a crippling problem if that particular adapter does not work in dual band mode, as it was advertised as such in the Dell specification as "Intel(R) Dual Band Wireless-N 7260 2x2 B" which is an adapter specifically designed for Haswell-based laptops. Yikes .
      My System SpecsSystem Spec

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