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

Anonymous

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?

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Anonymous

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

Navigate to the following path:

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\mrvlpcie8897

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

Then test your connectivity, and post results.

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Anonymous

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

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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417 additional answers

Anonymous

2015-09-17T05:01:36+00:00

I've got exactly the same problem. I'm on an SP3 With Win 10 - All the latest updates are installed and my actual connection speeds on the 5Ghz AC Band are horrible. Yes I can connect to the internet but moving files on my network to or from anEthernet connected NAS is horrific. 1GB took an hour but onthe 2.5Ghz channel just a minute and a half.

Wifi Status shows me that I'm connected at 722mbps but thats not me realized speed. I had no problem with my N router but 3 days ago I bought an AC router and it has been hell since. So I bought a 2nd router (Asus AC2400 AC87U)

and it made no difference.

Then I tried a D-Link DWA-182 USB Network adapter with both new routers and all my problems disappeared and speed was lightning fast. There is absolutely no doubt that the Marvell AC on Win 10 is not working with either of my 2 AC Routers.
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Anonymous

2015-09-16T19:08:28+00:00

Ran all updates and still have WiFi issues with the latest .193 driver. Reverted to the 15.68.3073.151 driver per Sammy8172's reply and it seems to be working better, but still a little sporadic.

C'mon Microsoft, you had me burning hours on this today!! It is your freaking flagship tablet. It should work out of the box.
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