Mary Skela

When I tried to find ".minecraft/" by searching through my computer's files that's what it redirected me to. The only search result sent me to the old launcher, which makes no sense at all, since that launcher has been replaced. I did not do anything to it, I just got the popup I mentioned that wanted me to, and eventually exited it without changing anything, because using the old launcher would make no sense.

I only have 1 Minecraft account, and I only have it installed once, on my one computer. I just tried to check my singleplayer worlds, using the instance set to the most recent update (1.15.1) and when I tried to click the play button a big error window saying "Error Launching the game failed!" appeared on two different lines, instead of opening the game. I've only ever used singleplayer worlds for testing updates when they come out (like how I'd initially planned on finding beehives in a new world, right after I checked if any of my servers were 1.15-compatible, when I discovered all my servers were gone) and I've never seen an error like this before, but I guess it means I can't play the game at all now.

I did not downgrade the profile I was using, that's not what I said. I switched to a different instance/profile/whatever you even call the separate little named icons (such as a furnace and whatnot) that can be made, each with their own version and settings attached, to see if it was just the one for 1.15 that had removed my servers, or if the other ones had it gone as well. I did not try more than the two (one with 1.15 and one with 1.14.2) just in case it was some sort of corruption I was spreading by opening them. I believe they are under the installations tab under the launcher but at no point should any of them have a different server list from any other, or even a different set of worlds, as far as I know. They certainly never have before.

I do not know how to attach log files but by now I bet it'd be too late. It's been weeks since the problem occurred, I've shut down and restarted my computer multiple times, and I even updated it once. The only thing that was abnormal the first time I opened the launcher and discovered this issue (aside from the deletion itself) was the launcher didn't fit the screen right/loaded weirdly, so I had to move it around and resize it manually so it'd look more normal again. I was having issues with my internet at the time so downloading the 1.15 update also took far longer than usual, but I figured it was just the internet issue causing both problems and otherwise proceeded as normal.

Well, my issue was completely different from this one, despite having the same result, and not only do I not have anything else that accesses my server list (or even my game) but none of those errors appeared (and I did not spam-click refresh) so I am quite certain my issue is not a duplicate of this one despite it being marked as one (especially since this report is not listed as affecting 1.14.2 or 1.15, which were the versions I tried).

In any case, I attempted to follow the instructions to get my list back and instead got redirected to the old minecraft launcher. I am now being asked whether I want to reset my configuration to use the old launcher or not, and have no idea what to do. It is very important for me to recover my old server list since I have no other record of my server IPs, and quite frankly, I do not want to have to go hunting for new servers and communities to join when all my old ones still exist, and I just can't access them. Does anyone know how I should proceed? I've already been waiting quite a while for this to be resolved and all I've gotten was silence.

No, because it happened straight from the launcher. The main gaming window with the options for singleplayer, multiplayer, and realms did not appear until after the credits were done. The credits appeared instead of the menu. I opened the minecraft launcher, hit the button that said "Play 1.12.2 - Latest release," but instead of opening to the game it froze and wouldn't respond then cut to the credits instead, so it would not have been possible to click anything on the main menu because the menu did not appear until the credits were done playing. I did not have the option to click "Copyright Mojang AB" until after the credits had already played and the menu was finally up.
Edit: To clarify, the window that should have shown the singleplayer/multiplayer/realms options did open (and the launcher did close) but instead of showing that menu as it normally does it went right to the credits. The launcher closed, that window opened, the window froze, and it cut right to the credits without giving me any buttons or pieces of text to click. I could not have clicked that text because the text did not appear until after the credits were gone and the game had opened as usual. I cannot remember whether the window froze/stopped responding before or after getting to the big white screen with nothing but the word Mojang and the Mojang symbol on it, but nevertheless it did not get past that to the main menu until after the credits had played.