Windows 10: Windows 10 21H2 update issues Killer Wireless 1535a/c/n/ac device not working

I just updated my Alienware 17 R4 computer to Windows 10 21H2 and my Killer Wireless 1535a/c/n/ac stopped working. Bluetooth worked but the WIFI didn’t so I removed the Killer Wireless card through Device Manager and reinstalled it but that didn't work. Then I removed all the drivers and downloaded the last ones for my computer from Dell and reinstalled all of them in secession and that didn't either. Finally the only thing I could do at that point was to roll back the update and everything started working again. Do you have any suggestions? Thanks, Karl

:)

 

Killer Wireless-n/a/ac 1525 Wireless Network Adapter

I have a code 10 error when my computer attempts to run "Killer Wireless-n/a/ac 1525 Wireless Network Adapter". This prevents me from connecting to the internet via wifi. I have tried reinstalling the driver, updating the driver, and there is no success.

 

Windows 10 and Killer Wireless 1535a/c/n/ac device not working

Hi Bill. II'm Greg, an installation specialist, 10 years awarded Windows MVP, and Volunteer Moderator, here to help you.

If you have Dell then the driver should first come from Dell using the Service Tag on sticker to get drivers for your build:

http://www.dell.com/support/home/us/en/19/Produ....

If that's not enough then try the Killer device driver here:

https://support.killernetworking.com/software/

I'll give you everything that works to fix Wifi so that at least something will work. Even if you've already tried a step please try or check it again in sequence. If you need any assistance I'll be standing by here to help:

Update your network adapter drivers from the PC maker's Support Downloads web page using the full model number, HP Serial Number or Dell Service Tag on sticker. Compare the latest drivers available for download with the ones presently installed in Device Manager
reached by right clicking the Start Menu. Make sure you have the latest BIOS or UEFI firmware, Chipset, Display (Video), Sound, USB3, Bluetooth, Network and all other drivers, or else download and install the latest now.

If you have the latest network driver then try on it's Driver tab also to Roll Back, or Uninstall and then restart PC to reinstall the driver. Try also all older drivers from Update Driver > Browse > Let Me Pick list working backwards.

Go to Device Manager > Network Adapters, select Wifi adapter, then Power Management tab, clear the check box to "Allow the computer to turn off the device to save energy." Then on the Advanced tab disable any energy-saving options.

If this was caused by Windows Updates then you can check which were installed at Settings>Update & Security>Windows Update under Installed Updates, then uninstall them from the link there, and hide with the Hide Updates tool explained here:

https://www.howtogeek.com/223864/how-to-uninsta...

You can also use System Restore to get before the problem began, then check for Updates with the Hide Update tool and hide them.

If this was caused by Version update then you can roll it back in Settings>Update & Security>Recovery and then hide it until it matures using the Hide Updates Tool.

For Wifi won't connect issues after Version 1903:

https://windows101tricks.com/fix-wifi-keeps-dis...

https://www.techrepublic.com/article/wi-fi-and-...

https://pureinfotech.com/fix-wifi-problems-wind...

Enable IPv6 in the network adapter settings:

https://www.tenforums.com/tutorials/90033-enabl...

Run the fixit from
https://support.microsoft.com/help/929852 (Re-enable IPv6 on all nontunnel interfaces) and reboot.

Right click the network icon in System Tray at bottom right end of task bar to Troubleshoot Problems.

Try all of these steps:

Fix network connection issues in Windows - Windows Help

https://www.kapilarya.com/how-to-reset-network-...

Go to Settings > Network & Internet > WIfi > Manage Known Networks, highlight and remove the network having problems, restart PC to see if it shows up again.

Try plugging in by ethernet cable to the router to compare, then plug the ethernet cable into the modem (if separate) to see if this might be an issue with the router.

Try powering off modem, router and PC and then restarting in that order with 1 minute in between each. You may need to reset your router or even optimize it following these steps:

https://www.lifewire.com/resetting-a-home-netwo...

https://www.pcmag.com/article/258865/how-to-set...

Your router manual is always available from the manufacturer's website for your exact model.

You also are entitled to Support from your internet provider to get online on all devices. This is always included in the monthly bill. If your router is less than a year old they will also Support getting it connected and optimized.

Another option is you could replace the wireless adapter with an inexpensive USB nano adapter like this one:

https://www.amazon.com/OURLiNK-600Mbps-Wireless...

If nothing else works then do a Repair Install, by installing Media Creation Tool, open tool and choose to Upgrade Now. This reinstalls Windows while keeping files, programs and most settings in place, and is also the most stable method to advance to the latest
version.
http://windows.microsoft.com/en-us/windows-10/m...

I hope this helps. Feel free to ask back any questions and keep me posted. If you will wait to choose if I resolved your problem, I will keep working with you until it's resolved.

________________________________________________________

Standard Disclaimer: There are links to non-Microsoft websites. The pages appear to be providing accurate, safe information. Watch out for ads on the sites that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly
research any product advertised on the sites before you decide to download and install it.

 

Killer Wireless-AC 1535 - 5GHz isn't Working

Hi all experts fellows ,


I need your help/support to solve my Dell XPS 15 9560 network adaptor which is Killer Wireless-AC 1535 and the 5GHz isn't Working on my laptop, while I can confirm my router is working fine because all of my other devices perfectly connected with my router ,

Windows version is 1903 OS build is 18362.449

On Killer Wireless-AC 1535 official website stated it does support the 5GHz frequency but when I tried to search in WINDOWS 10 Pro for the available wireless connection the 2.4Ghz is appearing only ,

I tried to troubleshoot all , installed/uninstalled drivers , reset network , clear cache , flush dns , every possible way but the 5Ghz band/frequency isn't appearing on my WINDOWS 10 PRo

even I contacted Microsoft support they troubleshoot remotely over many of hours but no resolution for the issue , finally they suggested to install a clean windows and I did that with one of their representative support ,
but the issue remain same ,

I myself is a software developer so you can guess I'm not new/noob to computers,

Please suggest