Questions about the Killer Wireless-AC 1550


Questions about the Killer Wireless-AC 1550

Some users have had questions about the Killer Wireless-AC 1550. This list will be updated frequently, but feel free to contact support at if your question isn't addressed here:

Q: Where can I buy the Killer Wireless-AC 1550?
A: The Killer Wireless-AC 1550 is available as an integrated Wi-Fi adapter in Alienware, MSI, and many other high-end gaming laptops and other machines. You can also purchase the 1550 directly from Amazon at this link: - though availability will be somewhat limited. 

Q: I do not live in the USA. Where can I buy the Killer Wireless-AC 1550?
A: We are currently working toward making the 1550 available for purchase outside of the United States through that same Amazon link. Expected availability currently includes at least the UK. Other availability will be explored at a later time.

Q: Will the Killer Wireless-AC 1550 fit in my machine?
A: The 1550 will fit in any machine that has an M.2 slot that is keyed for a Wi-Fi adapter. However, some machine manufacturers do use a BIOS whitelist to allow only certain hardware to be installed in their machines - usually the same hardware that was an option when the machine was released. Please check with your machine's manufacturer to make sure that your machine will recognize the 1550.

Q: How do I install the Killer Wireless-AC 1550?
A: Installation will be highly dependent on your particular machine. Please refer to your machine's specific service or teardown manual.

Q: Will my machine's antenna work with the Killer Wireless-AC 1550?
A: The 1550 has two antenna connectors - one labeled MAIN and one labeled AUX. These are IPEX-MHF4 receptacles. As these can be fragile, we (and I-PEX) highly recommend using an IPEX MHF4L 90609-0001 tool to remove the antenna connectors from your old wireless adapter, and push the connectors onto your new adapter. This will avoid the nightmare scenario of the connectors breaking off of your old wireless adapter and getting stuck in your antenna leads. It also makes the whole job significantly simpler. If you are unable to obtain such a tool, be sure you pull the antenna leads straight up off of the connectors, to avoid breaking the connectors off of the card. 

Q: My machine has 3 antenna leads while the 1550 only has 2 connectors. Will it work?
A: This will depend on what each of the 3 antenna leads for your specific machine are connected to. You will need to refer to your specific machine's service or teardown manual for that information.

Q: Are there Windows 7 or 8.1 drivers for the 1550?
A: No. The Killer Wireless-AC 1550 requires Windows 10.

Q: The Killer Wireless-AC 1535 advertises 5 GHz range extending. The 1550 does not. Does this mean that the 1535 has better range on 5 GHz than the 1535? 
A: In some cases, this is possible! The 1550 is a 160 MHz card, while the 1535 is an 80 MHz card, so if the wireless access point is a 160 MHz radio, the 1550 will definitely outperform the 1535. However, in 2018, there are still very few 160 MHz access points, so it is possible that the 1535 will have better range due to its range extending amplifiers. 



Killer Control Center Errors After Update


Killer Control Center Errors After Update

Some users may experience errors with the Killer Control Center after updating to the latest version. This usually occurs when updating without uninstalling the old version first. While this is normally not a problem, we have noted that some users are encountering problems where:

  • The Killer Control Center will not open
  • The Killer Control Center causes GDI Exception Errors
  • The Killer Control Center causes a "NavBar" error.
  • Some specific websites are not accessible, while most websites are accessible. 

The solution to these issues is to perform a clean install of the latest Killer Control Center by following these steps:

  1. Make sure you have a copy of the latest installer handy -
  2. If you are encountering the issue where some websites are not accessible while most websites are accessible, download the Killer Remover -
  3. Right-click Start, click Apps and Features, and then find every "Killer" application listed, click, and click Uninstall. This includes any and all "Killer Performance Driver Suite" and any variation. Make sure you are also uninstalling the Killer Network Manager, as the Killer Network Manager is not meant to be run with the Killer Control Center. The Killer Control Center replaces the Killer Network Manager.
  4. Restart your machine by clicking Start > Power > Restart
  5. If you downloaded the Killer Remover in Step 2, run it now. It will have you restart again once it is finished running.
  6. Once your machine has booted back up, access the temp directory by clicking Start and typing %temp% and pressing Enter.
  7. Delete the contents of this folder. These are temporary files that are meant to be deleted from time to time - you cannot harm anything by deleting all of these files. You may not be able to delete some of these files. It is okay to "Skip All" for these files.
  8. Double-click the installer for the latest Killer Control Center. and follow the prompts to complete install.
  9. Test to see if the issue is resolved.

If you continue to experiencing issues, please contact us at

Issues When Updating or Installing Killer Control Center


Issues When Updating or Installing Killer Control Center

Users may encounter errors when installing or updating the Killer Control Center. 

If you encounter any problems, please select from the following options:



The Killer Control Center Cannot Automatically Update

 If the installer cannot automatically update, you might see an error, such as, but not limited to, this one:

Killer Performance Driver Suite Cannot Be Installed With

In this case, you will need to manually uninstall the previous versions. First, however, you will want to download the latest installer and have it handy. Once you have the installer ready to go, right-click Start, click Apps and Features, then find every entry that has "Killer" in it, including "Killer Drivers" and/or "Killer Performance Suite, or any variation, and uninstall them. After they have uninstalled, restart your machine, then install the latest suite.


Previous Killer Applications or Drivers Cannot Be Uninstalled
There Are No Killer Applications or Drivers in The Apps and Features Menu But the Killer Control Center Will Not Install

If you encounter an issue where the old "Killer Suite" or "Killer Drivers" cannot be uninstalled, and they remain stuck in your Apps and Features menu, or they appear to be removed, but the latest Killer Control Center appears to attempt to install, then roll back, then there are a few ways to address this. Even if you can no longer see the old applications in your Apps and Features menu, it is very likely that they are still there, and that they are the problem. For very old previous installs, especially those that may be broken by updates from Windows 7 to Windows 10, we have developed a tool that can remove the old installs. Here is a step-by-step guide on downloading and using the tool. Use this as your first step in troubleshooting a broken older install:

  1. Download the Killer Remover from here -
  2. Right-click Start and click Apps and Features.
  3. Uninstall all "Killer" suites and drivers that will uninstall from this menu. 
  4. Close the Apps and Features menu and double-click the Killer Remover.
  5. Once it is finished, it will prompt you to restart your machine. Restart your machine, and check to see if the stuck item is removed from the Apps and Features menu


The Application is Still Stuck or The Latest Package Still Cannot Install After I Have Run the Killer Remover

The Microsoft Installer is probably encountering an error from which it cannot recover. Sometimes, you will get an error, such as "The feature you are trying to use is on a network resource that is unavailable..." or some other seemingly unrelated error, or the installer may fail with no error given other than it could not complete. Luckily, Microsoft has a tool to fix this issue, and you can find our detailed, step-by-step guide on how to find and use Microsoft's tool for fixing problems that block programs from being installed or removed- Make sure you choose "Uninstalling" even if you are trying to ultimately install the latest suite, as the problem is that you need to remove the remaining parts of the old software, even if they do not appear in  your Apps and Features menu. 

If you still have issues with the Killer Control Center's installer, or uninstalling older versions of the suites, please contact support, and we will be happy to help. If the installer is failing, please run the installer one more time, and include the log that is generated in your temp folder. You can access your temp folder by pressing Windows Key + R, typing %TEMP%...


winkey r temp

...and pressing Enter.

From there, sort by Date, and attach the most recent MSI***.LOG to your support request. It should be dated at the time you last ran the installer.


You can reach support by clicking below. Please also include information on any troubleshooting that you have already done.

Error 2753: The File 'xtendsoftapservice.exe' is Not Marked for Installation


The File 'xtendsoftapservice.exe' is Not Marked for Installation (Error 2753)

This guide also fixes the error "The feature you are trying to use is on a network resource that is unavailable..."

Some users may encounter this, or a similar error, when updating their drivers or Killer Control Center, or when uninstalling the Killer Control Center.

Even if you are in the process of updating the Killer Control Center, the issue is that the installer is unable to find this file in order to uninstall it, which is a necssary step for installing the latest suite.

The problem is that the file is either not present, or is not correctly flagged in the registry. This is a bug that was introduced in a few versions of the suite when it was present on your machine during a major Windows feature update, or an upgrade to Windows 10 from another version.

Note that this guide can also be used to uninstall some older versions of the application, which have become bugged due to Windows Feature Updates, and may or may not appear in the Apps and Features menu. The process is exactly the same. 

This issue can be resolved by following these steps:

  1. Download the latest Killer Control Center and keep it somewhere handy, to install when you're finished uninstalling the old suite -
  2. Download Microsoft's tool for fixing problems that block programs from being installed or removed - 

    microsoft uninstall fixit2

  3. Once you have both of those things downloaded, uninstall all Killer products from your Apps and Features menu, which you can access by right-clicking Start.

    right click start uninstall killer

  4. You may encounter that same error - Error 2753. The File 'xtendsoftapservice.exe' is Not Marked for Installation - and that is fine. When you do, skip that application, and uninstall any other applications from "Killer" including "Killer Drivers."

  5. Now run the tool from Microsoft. 

  6. For the first menu, you will simply click Next

    ms uninstall fixit 1

  7. Then after a moment of "Detecting Problems", it will ask if you are having a problem installing or uninstalling a program. Even if you are trying to update or install the Killer Control Center, the actual problem is happening when the installer attempts to uninstall the old suite, so you will choose Uninstalling

    ms uninstall fixit 2

  8. At the next prompt, the program will ask you to choose from a list of programs. Find the Killer-related program in the list. It may not be the same as the one in this screenshot, but choose whichever Killer suite the program finds, and then click the Next button. 

    ms uninstall fixit 3

  9. The tool will then proceed to erase the parts of the Killer suite that the installer was unable to remove from the registry. If the program is not listed, you have the option of choosing "Not Listed", and the tool may still find the pieces in the registry that need to be removed. However, it is hard to duplicate that particular scenario, so providing a screenshot is not possible, but it is fairly self-explanatory. 
  10. Once the tool has finished doing its work, you will want to restart your machine once more, and then install the latest Killer Control Center, which you downloaded previously.
  11. If you have any further questions, feel free to contact support at the link below! 

Ad-Hoc and Hotspot Functionality with Killer Adapters in Windows 10


Ad-Hoc and Hotspot Functionality with Killer Adapters in Windows 10

You may wish to create an Ad-Hoc or Hotspot network with your Killer Adapter on your Windows 10 machine.

With Windows 10, all Ad-Hoc and Hotspot functionality has been officially moved away from the drivers, and into the operating system itself.

If you would like to create a Hotspot or Ad-Hoc network with Windows 10, you simply need to click Start, type Hotspot, and press Enter. All of the relevant settings for your Hotspot network will be on that page.

Hotspot Settings
With Windows 10, this is the current official limit of Hotspot or Ad-Hoc functionality.

The Windows 10 version of our driver does not support the "Hosted Network" feature because Microsoft's own WDI driver does not have support for this. Microsoft is having all wireless vendors move to the WDI model, thus this feature will not work on Windows 10 drivers until after (and if) Microsoft expands support for SoftAP/Wi-Fi Direct.

In the meantime, if you need this feature back for certain older applications that made use of their own Hotspot or Ad-Hoc features, you can load the Windows 8.1 drivers via Device Manager from our INF download. We have verified that this works, and have had confirmation from other users as well.

However, we cannot guarantee that Windows Update will not automatically update these drivers, or that they will work flawlessly with Windows 10, as they are, after all, Windows 8.1 drivers. Use Windows 8.1 drivers in Windows 10 at your own risk.

Windows Server Drivers


Windows Server Drivers

From time to time, we receive requests for Windows Server compatible drivers for our network adapters. Although we do not provide package installers for Windows Server editions, our drivers are Windows WHQL certified, and as such will work with recent Windows Server editions, so long as they are installed manually from the Device Manager using our .INF files.

You can download the .INF files from this location -

If you need assistance manually installing the .INF files using Device Manager, you can follow our guide here -

The Killer Control Center is not availalbe on Windows Server editions. 

The Feature You Are Trying To Use Is On A Network Resource...


When updating the Killer Control Center, you may encounter the error "The feature you are trying to use is on a network resource that is unavailable..." 

the feature you are trying to use

This issue can be resolved by using Microsoft's tool for fixing problems that block programs from being installed or removed. Although it may seem like the issue is happening when you are installing the Killer Control Center, the problem is actually happening when the installer is attempting to remove pieces of older installs, so you will need to choose Uninstalling when prompted. A detailed guide for using this tool is availabie here - Although the article does not talk about this issue specifically, the guide and fix is exactly the same. 

Installing Bluetooth Drivers From Device Manager


In some cases, when there is no driver for your Bluetooth device, the Device Manager may mis-identify the Bluetooth device, or it may not identify it at all. In this case, you will need to install the Bluetooth driver from the Device Manager by following these steps:

  1. Run the installer but don't bother rebooting
  2. Verify that it created a folder called "C:\Program Files (x86)\Bluetooth Suite"
  3. In Device Manager, double-click the Bluetooth device, however it is currently named
  4. Under the Driver tab, click Update Driver
  5. Click Browse My Computer For Driver Software
  6. Click Let me pick from a list of device drivers on my computer
  7. Click Have Disk
  8. Browse to "C:\Program Files (x86)\Bluetooth Suite\driver"
  9. There should be only one option - atheros_bth.inf - click it and click Open
  10. Click Okay
  11. Select Qualcomm Atheros QCA61x4 Bluetooth 4.1 and click Next
  12. Click Yes on the warning popup
  13. Reboot after it finishes the install
  14. After the reboot, check Device Manager to verify that your Bluetooth device is now named Qualcomm Atheros QCA61x4 Bluetooth 4.1 and you should be good to go!

E2100, 2100, and Xeno Pro Drivers (Legacy Devices)


The E2100, 2100, and Xeno Pro are legacy devices, and no longer receive updated device drivers. Please contact the manufacturer of your Killer 2100, Killer E2100, or Xeno Pro for the latest drivers. The same driver (either 32bit or 64bit) works for each product. It has been confirmed that the latest drivers for Killer 2100, Killer E2100, or Xeno Pro can be downloaded on VisionTek’s support page at: If you are using Windows 10, and Windows does not automatically install drivers for the device, the Windows 8.1 drivers should work for your application.

Support is no longer available for the Killer M1 and Killer K1.

Have a question about your Killer product that isn't answered in our Knowledge Base?  Contact Us.