The class not registered error can also happen if Edge is not configured as your default browser. Next, enter ‘sfc /scannow’ and press Return key to run the scan that might then make some required repairs. Open the Win + X menu by pressing the Win key + X, and then select Command Prompt (Admin) from there. Or you could try a file scan with the Command Prompt. Also remove iCloud from the Windows startup as covered in this Tech Junkie post. You should at least close iCloud when it’s running with the Task Manager by pressing the Ctrl + Alt + Del hotkey, right-clicking iCloud and then selecting End Task. So consider removing that software if you’ve installed it. For more information, see your router's user manual.The class not registered issue is also linked with iCloud running in Windows. The extender's IP address displays in the list. Note: To find your extender's IP address, log in to your router and look for a list of devices connected to your router. To log in to your extender, enter one of the following URLs in your web browser depending on your device: ▪AX1800 Dual Band WiFi Mesh Extender Model EAX20.▪AC1900 Dual-Band WiFi Mesh Extender Model EX6400.▪AC1900 Nighthawk WiFi Range Extender Model EX7000.▪AC1900 Dual Band WiFi Mesh Extender Model EX6410.▪AC1900 Dual Band WiFi Mesh Extender Model EX6420.▪AC1750 Dual Band WiFi Mesh Extender Model EX6250.▪Nighthawk X4S AC2200 Tri-Band WiFi Mesh Extender Model EX7500.▪Nighthawk X6 AC2200 Tri-Band WiFi Mesh Extender Model EX7700.▪Nighthawk X6S AC3000 Tri-Band WiFi Mesh Extender Model EX8000.▪Nighthawk X4 AC2200 Dual Band WiFi Mesh Extender Model EX7320.

▪Nighthawk X4 AC2200 Dual-Band WiFi Mesh Extender Model EX7300.

▪Nighthawk AX8 8-Stream AX6000 Dual Band WiFi-6 Mesh Extender Model EAX80.

Note: These instructions apply only to the following extenders:

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