Some laptops can’t connect to Orbi

What Firmware version is currently loaded?
What is the Mfr and model# of the ISP modem/ONT the NG router is connected too?

Were the laptops recentlly updated on there OS? 

Esure the latops wifi adapter drivers are up to date. 

Other things to try:

What is the size of your home? Sq Ft?
What is the distance between the router and satellite(s)? 30 feet is recommended in between RBR and RBS to begin with depending upon building materials when wirelessly connected. https://kb.netgear.com/000036466/How-far-should-I-place-my-Orbi-satellite-from-my-Orbi-router

What channels are you using? Auto? Try setting manual channel 1, 6 or 11 on 2.4Ghz and any unused channel on 5Ghz.
Any Wifi Neighbors near by? If so, how many?

Try enabling Beamforming and MIMO(MIMO may or maynot be needed) and WMM. Under Advanced Tab/Advanced Settings/Wireless Settings
.

Try disabling the following and see:
Armor, Circle, Daisy Chain, Fast Roaming, IPv6 and Set 20/40Mhz Coexistence to 40Mhz only. Set Short preamble instead of Long preamble modes. Save settings and reboot the router and satellite(s).

Has a factory reset and setup from scratch been performed since last FW update? 
https://kb.netgear.com/31486/How-do-I-reset-my-Orbi-system-to-factory-default-settings
https://www.youtube.com/watch?v=ePZSc7vnRlQ

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Cicada1105 wrote:
Some of our laptops cannot connect to the Orby wireless network. They used to work and now are no longer and we have no idea why. We have turned off the power disconnected the routers and tried that full reset and it still does not work. Any ideas how to fix this?

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some?

try resetting the laptop wifi adapter.  if some are and some aren't it's probably not the Orbi