JoeViking245

That version must double up the slashes. I double checked mine (MAME 0.283) and it showed: Video: Monitor 65537 = "\\.\DISPLAY1" (primary) (I only have one monitor hooked right now) But hey, can't argue with the verbose readout. Glad you got it working!

Change this to 2.

Looks like too many backslashes. Try \\.\DISPLAY2 And should only need to set it on the 1st screen [vs. also on screen0, screen1, screen2, screen3]. Everything else should be left auto. Yes. A resounding No.

That all depends on the emulators used for each platform. And if they do have an accessible in-game menu system, you might/should be able to remap the key(s) similar to what you did with MAME.

Per the temporary Workarounds outlined in the link above by @AstroBob, ("scanning" is equivalent to "importing")

You never mentioned that was the specific button you wanted to use. But my Note (above) did cover that. Or get creative (now that I know that's the specific button you want to use). (In LaunchBox) Edit your MAME emulator In the Running Script section, add SetKeyDelay, 125, 50 $vk07::Send {Tab} If there's something in there already, add it to the bottom Click OK to save & close Play games and cheat to your hearts content

I tested it before posting (that's how I knew the steps to write ) and it worked then. Make sure your controller is on before starting MAME. With Show/Hide Menu highlighted, press Enter then press "the button". Note: The Guide button won't work for this. MAME doesn't "see" it.

Well, (2) is the "bundle" which includes both licenses (Windows and Android). So you would only need (1), the Windows [only] Lifetime Premium plan.

This is a known issue, under investigation. Read here for more information: LaunchBox Error When Attempting To Download Video Media From Steam - LaunchBox

When you deleted the file, did you do it while LB was not running/open?

If you look under Tools < Manage < Storefronts..., you notice you have the option to import Steam games you have installed on your computer. It continues with... (paraphrasing) to import all your Steam games, you need to be logged in [to your Steam account]. When you remove a Steam game from your LaunchBox collection, it gets added to a "blacklist" so it doesn't auto reimport the one(s)-you-don't-want to see. Look in your /LaunchBox/Data/ folder for the file "ImportBlacklist.xml". (With LaunchBox closed...,) you can carefully edit that file and remove games you don't want blacklisted. Or just delete the file to "un-blacklist" them all.

It has nothing to do with LaunchBox. It's all via MAME. If you're referring to the menu that you get to when in-game, you press Tab... Open MAME (In LaunchBox, right-click an Arcade game and select Open MAME) Go to General Settings - Input Assignments - User Interface Set whatever button to the 1st item Show/Hide Menu When done, press Escape - Escape (and then I think you need to...) select Save Settings

Since you already have the Android Premium license, you only need the Windows one. If you get it within just under 15 hours (as of this writing), you can get the Windows Premium Lifetime license for $45 USD.

This is unrelated to your OP and really, should be brought up in a new thread. Reason being, when future users/readers are trying to resolve a similar issue, the tendency is to glance at the threads title. Help us organize to keep you (and others) organized.