1 2 3 Previous Next 36 Replies Latest reply on Nov 19, 2017 12:29 PM by Zastar

    AC - 8260 - Connectivity Issues


      I have a 2 week old laptop with a an 8260 adapter which has caused me nothing but stress from day 1. I suspect this is driver related and hope it will be resolved, but wanted to post here to give some visibility to this as the adapter is still relatively new. I haven't been able to pickup on what causes the issue, at times it seems as though after periods of extended sleep it will happen. I've also noticed it happens more on battery but I've also had it happen while plugged in. The adapter may work fine for several hours, then suddenly starts dropping connectivity even though it has been in the same location all along.


      Scenario 1:

      • During browsing, my browser will return a DNS error however my wifi connectivity icon shows full bars. Checking the network adapter shows that it has been disabled on its own. Attempting to re-enable it fails as it says enabling then reverts back to disabled. Eventually, after 3-5 minutes connectivity may be restored but it will continue to lose connectivity every 5 minutes or so until I reboot.  Once the adapter goes into this "poor reception state", it will drop connectivity regularly until I restart.


      Scenario 2:

      • Randomly, the WiFi icon will suddenly show an exclamation mark next to the Wifi icon. The adapter also shows disabled and wont re-enable in network settings. In this scenario, wifi does not restore until I reboot the machine.



      Some details:

      I am using Intel Dual Band AC-8260 adapter running windows 10 on Skylake Architechture.

      Using the latest 18.0.33 Drivers


      I have tried this workaround, but the behavior still seems to persist again at random times (Power Saving = Maximum Performance).



      Here are some of the events that I see being logged regularly when the adapter starts misbehaving:




      WLAN Extensibility Module has stopped.


      Module Path: C:\Windows\System32\IWMSSvc.dll



      WLAN AutoConfig detected limit connectivity, performing Reset/Recover.adapter.


      Code: 2 0xDEADDEED 0xEEEC




      The description for Event ID 7002 from source Netwtw02 cannot be found. Either the component that raises this event is not installed on your local computer or the installation is corrupted. You can install or repair the component on the local computer.


      If the event originated on another computer, the display information had to be saved with the event.


      The following information was included with the event:



      Intel(R) Dual Band Wireless-AC 8260


      The specified resource type cannot be found in the image file

        • 1. Re: AC - 8260 - Connectivity Issues



          There are no known reports that the would link issues with Skylake platform. Have you tried a clean uninstall and install the drivers again? We recommend that you try the OEM's first and as a second option, you can try our latest version (18.33.0) available in our support site. Please do the following:



          1.  Download and save Download Intel® PROSet/Wireless Software for Windows® 10 File name: Wireless_17.16.0_s64.exe

          2.  Go to Control Panel, Programs and Features and Uninstall "Intel® PROSet/Wireless Software", if it is installed. When prompted, choose the option to "Discard settings".

          3.  In Control Panel, Device Manager, Network Adapters, right click on the Intel® Dual Band Wireless-AC 8260 and Uninstall it. Make sure you mark the option to "Delete the driver software for this device".

          4.  Reboot the PC or scan for hardware changes, check device manager and if an older driver is detected and installed, repeat the actions to uninstall and delete it as well. Repeat this process until the OS does not allow deleting the driver, or until the controller shows as Unknown Device.

          5. Reboot or scan for hardware changes, then uninstall and delete any older driver versions as you did for the Wireless adapter.

          6. Install the Intel® Wireless driver. During the first steps of PROSet/Wireless installation,  make sure to customize the installation and install all the 3 driver components.

          • 2. Re: AC - 8260 - Connectivity Issues

            Thanks, however I am already running those drivers My manufacturer has advised me to use the generic Intel drivers. They have not published any OEM drivers.


            I have noticed that the issue seems to occur after sleep. If you restart the machine, the issue does not occur until the machine enters connected standby/sleep. Once it wakes up, immediately I start seeing these types of entries in event viewer. Eventually the connectivity will fail.



            The description for Event ID 7002 from source Netwtw02 cannot be found.


            WLAN Extensibility Module has stopped.

            Once the connectivity starts failing, this screenshot captures the overall experience:


            • 3. Re: AC - 8260 - Connectivity Issues



              We have recently released a new driver version. Please try it out. For your convenience here is the link: Drivers & Software

              Let us know if this new version worked for you.

              • 4. Re: AC - 8260 - Connectivity Issues

                I am having the same problem with this card (AC 8260) on a brand new Lenovo P70. It's driving me nuts. I am running on the latest driver



                Event Viewer log:





                Please look into it.

                • 5. Re: AC - 8260 - Connectivity Issues



                  Is this wireless adapter installed by factory or was it installed later?

                  Does this happen when you roam?

                  Are you doing any specific tasks when disconnection occurs?

                  Please, provide as much details as possible about this situation so we can assist you.


                  Best regard,


                  • 6. Re: AC - 8260 - Connectivity Issues

                    Hi Aleki_Intel,


                    The wireless adapter is installed by factory. No it doesn't happen when I am roaming.


                    It's basically happening at random during use but most of the time I see it happen when I come back to my laptop after a random amount of time. During this time my laptop was not idle and running heavy processes.


                    I already uninstalled, reinstalled all drivers, disabled power management, no luck whatsoever.


                    I am seeing the same behavior as nealiusdescribed. After the adapter goes is a strange unknown state (adapter disabled, but Wifi icon still shows it's connected but with an exclamation mark) my browser Chrome becomes unresponsive as well. Enabling the adapter doesn't work. I have to reboot the computer which takes unusual long time.


                    When does NDIS decides to begin resetting the NIC?





                    • 7. Re: AC - 8260 - Connectivity Issues



                      What is your OS version?


                      Best regards,


                      • 8. Re: AC - 8260 - Connectivity Issues



                        Windows 10 Enterprise (10.0.10586).


                        Over the weekend I will try another WIFI router and update my current router which is a FRITZ!Box 7360 with firmware 6.30.





                        • 9. Re: AC - 8260 - Connectivity Issues



                          Intel recommends to obtain the latest driver from the computer manufacturer first. If this situation still persists, as a second you can try our generic drivers. We have just released new ones for this adapter. The version is 19.0.1 which contain a lot of improvements. Could please try it and let us know if this situation is resolved? For your convenience, here is the link to it. Intel® PROSet/Wireless Software and Drivers for Windows® 10 - The driver version for this adapter found in this package is: - *Please, make sure to download the one according to your OS architecture 32 or 64 Bit


                          Best regards,


                          • 10. Re: AC - 8260 - Connectivity Issues

                            I can report the exact same issue. I really hope there's a fix, none of the new driver versions have yielded any success or change in the issue nor does fiddling with the wireless power saving settings.

                            The network interface "Intel(R) Dual Band Wireless-AC 8260" has begun resetting.  There will be a momentary disruption in network connectivity while the hardware resets.

                            Reason: The network driver requested that it be reset.

                            This network interface has reset 21 time(s) since it was last initialized.


                            If anyone wants me to provide more data for troubleshooting/driver fixing direct me as to how and I will.


                            EDIT: I've reverted to the OEM drivers (from 2015), I'll see if this solves the issue.

                            EDIT2: Completely wiped all wireless drivers and installed OEM version, it installs but doesn't detect the driver.

                            • 11. Re: AC - 8260 - Connectivity Issues

                              The new driver doesn't fix the problem.


                              Last Thursday I tested with the driver on an new location (work) with a different router. I ran without problems for a full day.


                              Last Friday I tested with the driver on an new location (work) with a different router. I ran without problems for a full day.


                              Back home on Saturday I upgraded the firmware of my FRITZ!Box 7360 router to version 6.52. I ran without problems for 1.5 days before the problem showed itself again.


                              EDIT 1: I just bumped into the problem within one hour after a fresh reboot at home. This time, after requesting a new reboot, I waited to see how long it would take to do the reboot, normally I went away for some coffee, but this time I didn't and I noticed that the OS isn't able to perform the reboot and it crashed (BSOD) with a DRIVER_POWER_STATE_FAILURE error. If you want I can provide Intel the memory dump.

                              • 12. Re: AC - 8260 - Connectivity Issues



                                Yes please, send us the full memory dump so we can take a look.


                                Best regards,


                                • 13. Re: AC - 8260 - Connectivity Issues



                                  The link to the dump is available for 30 days.




                                  I have the feeling it happens more often when I am on battery (not plugged in).





                                  • 14. Re: AC - 8260 - Connectivity Issues



                                    Thank you. We are going to take a look and will get back to you as soon as possible.


                                    Best regards,



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