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As if it wasn't bad enough that they want me to use a random internet service to add a keyboard to a usb wifi receiver, they have the balls to put this for Firefox users. I clicked out of pure curiosity, as I'm not even remotely interested in involving a corporate internet service in getting my keyboard connected to my computer. This is the message you get now on Logi Options software if you have a Unifying Receiver: 
For the curious: https://logiwebconnect.com
EDIT: some people on the thread have brought up that the error message being displayed for Firefox users is due to the WebUSB API not being implemented by Firefox due to security concerns. This still does not justify having to use a web app to plug peripherals to a PC.
hmm, I usually end up uninstalling 3rd party apps and just go with standard MS drivers. too much useless bloat. last bought a generic Amazon mouse because it does what I need
I hate how everything requires additional software all the time (at least on Windows). Just give me proper drivers and no bloat, how hard could that be? Instead I need the G HUB for button mapping on my G903, I need Logi Options for the fn keys to work on my MX Keys, I need two of Corsair's shitty fucking apps just to get readings from my "smart" PSU and to control the fans on my AIO, I needed an additional ASUS program that was incredibly fucking shitty, just to control the case fans (eventually gave up and now I'm more than happy just going into the BIOS settings)....and don't get me started on the rgb. Close G HUB? Now my mouse is all rainbows n shit. Close Corsair whateverthefuckname? Now my corsair keyboard has all the wrong colors since somehow they don't map them correctly to the onboard memory (I got rid of that keyboard and got the Mx Keys instead because there was 0 upsides to having a mechanical rgb keyboard). Even on my razer laptop, if I dare not have synapse, I'm stuck with shitty rgb mode, and they don't even try to get white properly implemented into their RGB keyboards.
Companies have had the chance to work together on making these things more standardized, less bloated, more controllable and user friendly, but instead they choose the path of bloated and buggy software or web apps for things you should be able to do locally. I hate it and I'm never going RGB or fancy schmancy that requires custom software ever again.
@JGrffn @m3t00 That is why it is best to try to ensure that as many components as possible are all from the same manufacturer, because generally their respective software allows you to control all your brand devices from a single application.
And that's exactly the problem, it's by design to pull you into a proprietary ecosystem and squeeze you for your money. Since companies have more incentive to make things NOT work across platforms than they do to work together, we're not getting out of this mess without government regulations in the countries that matter (so, USA and Europe.... Mostly Europe...)
Case in point: Apple and USB C, or phones and removable batteries.
@JGrffn Totally agree.