Thanks for this.  I had been pulling my hair out for months trying to find out why I too was getting kicked falsely.  So I've been keeping WB uninstalled for the time being.  I've reported this as a 100% reproducible bug on Epic's forums but my posts were deleted by "unknown".  Epic's end user support is the worst I've ever encountered from a company. 

I don't think you can just unload WB either; needs a full uninstall.  So strange.

Same issue for me. With WindowsBlinds installed but turned off, I still was kicked from Fortnite. With it uninstalled, I can play Fortnite just fine. Specifically, this is the Battle Royale mode of Fortnite I'm referring to. I don't think it would apply to the other mode because it's the AntiCheat software that's detecting WindowBlinds as a cheat method.

Also note, Fortnite uses both EasyAntiCheat and BattleEye for their anti-cheating system. Both are third-party programs to Epic Games (Epic makes Fortnite). I don't know how this is determined, but one of the two randomly handles detecting the cheat or it's possibly multi-layered. I get the impression BattleEye runs and, if it wants to, it starts up EasyAntiCheat. But that's only an impression.

I hope you guys can communicate with Epic, BattleEye and EasyAntiCheat to try to get WindowBlinds on the "good guy" list. That would be very awesome.

Well, that stinks. I sure hope this gets fixed soon. I hate not running WindowBlinds. I'm married to a Fortnite-player, so NOT playing Fortnite is NOT an option. Otherwise, she will give me "the look" (see https://www.youtube.com/watch?v=387AbF2qcgY for reference).

It's been 4 months now and not a single hard response from the Stardock team on a possible solution to this issue. Epic also seems reluctant to do anything about it. Given it's a specific application causing the issue, I would think the burden of resolution falls to that apps developer.

Stardock, are you doing anything to correct this issue?

I have two thoughts about this.

1. While it's literally their program that's triggering the false-positive from the anti-cheat software, they can't program around it. WindowBlinds does inject stuff directly into the OS so it appears to be doing things the average program shouldn't be doing. That being said, they can't really change the program to duck under the radar of the anti-cheat thing. Instead, they need to contact the two anti-cheat vendors that Fortnite uses and have WindowBlinds whitelisted.
2. Because of this issue, I've moved (back) to WinStep. It's been more than a decade since I used Jorge's programs. I must say, it's a real treat. I'm no longer running any StarDock utilities (even Fences has been replaced by Winstep's dock on my system and Start10 has been replaced by NextStart). The only bummers:
   1. Lack of documentation. You have to either experiment, search the forums, or post to the forums to figure things out.
   2. No real modification of the Windows theme. Fortunately, you can modify your overall Windows theme with WindowBlinds and then uninstall and most of the global colors and fonts stay applied. You just lose the stylized window framing.

As a result, this is probably my last year of Object Desktop for me too. I'll keep an open mind when it's time for me to renew in April. Maybe things will have improved by then because I'd still like to use WindowBlinds with my Winstep.

[...original message edited by me (the original poster) to remove mention of other, competing software...]