Surface Pro 3 - Windows 10 - WiFi (slow or limited connectivity )

Anonymous
2015-07-30T14:16:39+00:00

Have a Surface Pro 3 that worked fine till I updated to Win10.  Now the wireless connection seems to randomly go to a "limited connectivity" mode.  Fortunately was purchased from Costco a coupe of weeks ago so it is going back there if we can't get this figured out by Sunday.

The Surface Pro3 is a flagship device - why in the world would you subject your customers to have to resort to looking for help in forums like this?

Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.

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Anonymous
2015-11-13T10:20:54+00:00

Everyone,

Build 10586 - the November Windows 10 update - was released yesterday, and it contains a newer Marvell wireless driver 15.68.9032.47 - people are reporting that this greatly improves wireless connectivity. Please download the large update, and if you used the registry hack, reverse it as follows:

Press Windows button. Search for regedit. Open it

  1. Navigate to the following path:

 HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\mrvlpcie8897

  1. Find the item labeled “TXAMSDU”. Double tap and modify the value from 0 to 1
  2. Restart the machine

Then test your connectivity, and post results.

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Anonymous
2015-11-13T10:44:26+00:00

Fred,

the November Windows 10 update to build 10586 has new wireless drivers. Can you download and install the update (it should be offered via WU) and let us know if this changes your connectivity?

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Anonymous
2015-08-05T18:12:39+00:00

Penny,

These kinds of issues WERE present on 8.1 for months but they mostly all cleared after several driver updates.

And that particular router is not one known to exhibit slow wifi. I'm suggesting you trade it because it is SP new and you can now get one with 10 pre-installed and not have to go through an upgrade AND because you have this issue. Getting it swapped will rule out a hardware issue and would be a step forward.

This is what *I* would do if in this situation.

For what it's worth - Microsoft needs to fix the driver and any underlying Win 10 OS issues. It took them 9 months to get a "good" Windows 8.1 wireless driver. For now, consider an external USB wireless adapter. I carry around a http://www.amazon.com/Edimax-EW-7811UTC-Dual-Band-Connectivity-Exceeding/dp/B00FW6T36Y

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  1. Anonymous
    2015-08-23T20:18:24+00:00

    Travis (everyone), I've sent this info in to my Microsoft contact. 

    Is the default for your routers 20, 40, or 80 out of the box?

    And yes, reducing to 20 is NOT a real fix.

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  2. Anonymous
    2015-08-23T20:30:50+00:00

    I am believe the 20/40 Mhz Channel Bandwidth option is the default. 

    Here is the help from the Cisco Access Point the explains the option.

    Channel Bandwidth (802.11n and 802.11ac modes only)—The 802.11n specification allows a 40 MHz-wide channel in addition to the legacy 20 MHz channel available with other modes. The 40 MHz channel enables higher data rates but leaves fewer channels available for use by other 2.4 GHz and 5 GHz devices.

    The 802.11ac specification allows an 80 MHz-wide channel in addition to the 20 MHz and 40 MHz channels.

    Set the field to 20 MHz to restrict the use of the channel bandwidth to a 20 MHz channel. For the 802.11ac mode, set the field to 40 MHz to prevent the radio from using the 80 MHz channel bandwidth.

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