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Change the Wireless Network Name and Channel, save and reboot.
Try to change different security type to see whether you meet the same problem.
Check whether the laptop has a WIFI button, make sure the WIFI is on.
Once your computer is in range with the wireless network profile that is saved on your computer, it will automatically attempt to connect to that wireless network you have previously connected to.
When you connect to a wireless network, the settings and profile of that specific network is saved on your computer so that you won’t have to re-enter your network credentials, such as the wireless security key to connect the next time.
This is where your computer or wireless device connects to become part of your wireless network.
If you are not sure, please login the management page to double check.
So then I tried to connect from my desktop computer that has a wireless USB adapter attached to it and I ended up getting this error message: Fabulous!
I checked my settings on the wireless router to make sure I didn’t accidentally setup certificate security, but found no such thing.
Try a different laptop to see whether it has the same problem.
You can login ) and go to Wireless-Wireless Settings page to check it.