The UUIDs in my playerdata folder for my minecraft server keep changing or deleting themselves every time my friends and I log out of the server. This means that every other time we log in to the server, we will end up with the default spawn location and our inventories completely wiped. I have tried uninstalling and reinstalling all of the old server files and minecraft itself, and I do not use any mods or plugins on the server. The UUIDs keep creating old_dat files of itself before deleting itself. This has made my minecraft server unplayable.
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Yes, I am hosting it using the mojang server software. "online-mode" is set to true in my server.properties notepad.
[media]C:\Users\SELVA\Desktop\MC Server>java -Xmx4096M -Xms4096M -jar server.jar nogui
[14:45:15] [main/INFO]: Environment: authHost='https://authserver.mojang.com', accountsHost='https://api.mojang.com', sessionHost='https://sessionserver.mojang.com', name='PROD'
[14:45:16] [main/WARN]: Ambiguity between arguments [teleport, destination] and [teleport, targets] with inputs: [Player, 0123, @e, dd12be42-52a9-4a91-a8a1-11c01849e498]
[14:45:16] [main/WARN]: Ambiguity between arguments [teleport, location] and [teleport, destination] with inputs: [0.1 -0.5 .9, 0 0 0]
[14:45:16] [main/WARN]: Ambiguity between arguments [teleport, location] and [teleport, targets] with inputs: [0.1 -0.5 .9, 0 0 0]
[14:45:16] [main/WARN]: Ambiguity between arguments [teleport, targets] and [teleport, destination] with inputs: [Player, 0123, dd12be42-52a9-4a91-a8a1-11c01849e498]
[14:45:16] [main/WARN]: Ambiguity between arguments [teleport, targets, location] and [teleport, targets, destination] with inputs: [0.1 -0.5 .9, 0 0 0]
[14:45:16] [main/INFO]: Reloading ResourceManager: Default
[14:45:17] [Worker-Main-5/INFO]: Loaded 7 recipes
[14:45:18] [Worker-Main-5/INFO]: Loaded 927 advancements
[14:45:19] [Server thread/INFO]: Starting minecraft server version 1.16.1
[14:45:19] [Server thread/INFO]: Loading properties
[14:45:19] [Server thread/INFO]: Default game type: SURVIVAL
[14:45:19] [Server thread/INFO]: Generating keypair
[14:45:19] [Server thread/INFO]: Starting Minecraft server on *:25565
[14:45:19] [Server thread/INFO]: Using default channel type
[14:45:21] [Server thread/INFO]: Preparing level "world"
[14:45:22] [Server thread/INFO]: Preparing start region for dimension minecraft:overworld
[14:45:24] [Server thread/INFO]: Preparing spawn area: 0%
[14:45:24] [Server thread/INFO]: Preparing spawn area: 0%
[14:45:24] [Server thread/INFO]: Preparing spawn area: 0%
[14:45:24] [Server thread/INFO]: Preparing spawn area: 0%
[14:45:24] [Server thread/INFO]: Preparing spawn area: 0%
[14:45:24] [Server thread/INFO]: Preparing spawn area: 0%
[14:45:25] [Server thread/INFO]: Preparing spawn area: 0%
[14:45:25] [Server thread/INFO]: Preparing spawn area: 83%
[14:45:26] [Server thread/INFO]: Time elapsed: 4631 ms
[14:45:26] [Server thread/INFO]: Done (5.042s)! For help, type "help"
We need the log from the time those people tried to join for the first time and notices the inventory loss.
I've had the exact same issue with me and my brothers LAN world, my playerdata keeps getting wiped over and over again. I have no idea why though.
Are you hosting the server yourself, or are you using a third party hosting service? Also, is "online-mode" set to true?