How to Resolve Network Authentication Issues Affecting Login
In some cases, FSX Play may open but never progress past the loading or login screen, displaying only a blue spinning wheel. Internet access appears normal, and other applications work without issue.
This behavior is caused by network authentication conflicts, most commonly related to IPv6 being enabled on the PC’s active network adapter. On certain systems, outdated or bundled Intel Killer Network components can also interfere with authentication.
The steps below resolve the issue on all known systems.
Symptoms
Customers experiencing this issue may report:
FSX Play stays stuck on a blue spinning wheel
FSX Play never progresses past “loading”
Internet works normally
Issue appeared suddenly on a previously working system
FSX 2020 and FSX Pro function normally
Occurs on Intel, Realtek, MediaTek, and Killer Wi-Fi adapters
Seen on HP Omen, Alienware, MSI, gaming desktops, and Foresight Sports PCs
This issue is not caused by FSX Play updates, Windows updates (in most cases), or launch monitor hardware.
Fix 1 (Primary Fix): Disable IPv6 on Your Network Adapter
This resolves the issue for the majority of affected systems — even on PCs that have never installed Killer Network software.
Steps
Open the Control Panel.
Select Network and Internet.
Click Network and Sharing Center.
Select Change adapter settings on the left.
Right-click your active Wi-Fi or Ethernet connection.
Choose Properties.
In the list, find and uncheck:
Internet Protocol Version 6 (TCP/IPv6)
Click OK.
Restart your PC.
Launch FSX Play again.
Why this works
Some routers, ISPs, and wireless drivers partially support IPv6 or route it inconsistently.
When FSX Play attempts its authentication handshake over IPv6, the request may fail silently; leaving the app stuck at the loading screen.
Disabling IPv6 forces Windows to use a stable IPv4 route, allowing FSX Play to authenticate normally.
Fix 2 (Secondary Fix): Remove Intel Killer Network Software
If IPv6 is disabled and FSX Play is still stuck, the PC may have Intel Killer components installed.
Steps to Uninstall
Open Settings.
Go to Apps > Installed Apps.
Search for:
Killer
or
Intel KillerUninstall anything found, including:
Intel Killer Performance Suite
Killer Control Center
Killer Wi-Fi Manager
Killer Wireless Components
Restart your PC.
Update Intel Wireless Drivers
Install the latest Intel wireless drivers here:
https://www.intel.com/content/www/us/en/download/19351/intel-wireless-bluetooth-drivers-for-windows-10-and-windows-11.html
Download the installer
Run it
Restart your PC
This prevents Windows Update from restoring Killer components.
Fix 3 (Last Resort): Reinstall FSX Play
If IPv6 is disabled and Killer software (if present) has been removed, and FSX Play still freezes at the loading screen, a clean reinstall can help resolve corrupted files or a broken installation state.
Steps
Open Settings > Apps.
Select FSX Play.
Click Uninstall.
Restart your computer.
Download the latest installer from your FSX Live account.
Reinstall FSX Play and launch again.
Customers rarely need this step; most cases are resolved by Fix 1.
FAQ
Does this affect only FSX Play?
Yes. FSX 2020 and FSX Pro use different authentication methods.
Is disabling IPv6 safe?
Yes. Most networks rely on IPv4. This will not affect normal PC use.
What if I don’t have any Killer apps installed?
You can skip Fix 2 entirely.
Does this affect wired Ethernet too?
Yes, if IPv6 is enabled on the Ethernet adapter.
Why did this happen suddenly?
Network adapters, drivers, routers, and ISP IPv6 configurations can change without notice.
Will this issue come back?
No. Once IPv6 is disabled (and Killer Suite removed if applicable), the problem does not return.
Still Need Help?
If FSX Play continues to freeze on the loading screen after completing the steps above, contact our Support Team with your PC model, Windows version, and a screenshot of the issue.
Submit a Request