RBR750 CONNECTION_REFUSED loading admin interface

Update: 5/9/2022

My situation has been resolved. I am running W11 on a Dell XP8940 64 bit

After spending nearly 3 hours on the phone with tech support we managed to install the newest firmware.

Firmware Version V4.6.8.2_2.1.9

Basically we had to manually install the new firmware version onto the ORBI RBR750. 

Several steps:

1: Disconnect the ORBI from the internet modem,

2.With your primary device/PC connected to the ORBI, attempt to reach 198.168.1.1 as well as Orbilogin.net.  NOTE YOU ARE NOT CONECTED TO THE MODEM, you are not active on the internet during this time. All of your login attempts are only directed to the ORBI.  If both attempts fail you will need to reset the Orbi (paper clip wire).

3. Reset the ORBI several times to make sure all prior setting are back to default settings

3.With another device (connected to the internet), you will need to logon to your NETGEAR account seek out your Orbi model and download the newest firmware version/file, copy paste the file onto the desktop of the device/PC you are working with. With Windows, launch CMD - better explanation TFTP below - my tech support just followed the steps noted in the article:

To manually update the firmware on your Orbi router and satellite, follow these high level steps: : https://kb.netgear.com/31573/How-do-I-manually-upgrade-firmware-on-my-Orbi-router-using-orbilogin-com

THIS IS A NETGEAR PROBLEM AND NETGEAR SHOULD NOT REQUIRE ANYONE TO BUY AN EXTENDED SERVICE PLAN TO FIX THIS PROBLEM

After the Orbi reset and firmware upgrade, you will need to reset your network settings - passwords, etc., as well as all devices that are normally connected to your home/office network.

Finally, I was fortunate to have a good technician to help me with this problem - thank you!