The Minecraft launcher recently updated to add support for Microsoft accounts, it also changed the background and added a warning when I hover over modified profiles in the selection tab (This installation has been modified and might not support the latest player safety features.). I always use the Fabric modloader and I don't care about not having access to the "latest player safety features" and I've kinda had enough of Minecraft nagging me every time I switch versions when I want to play on different servers. I am not going to accept "Stop using mods" as an answer, as I do not intend to do so. I have searched across google for answers but haven't been able to find information regarding this anywhere.

1 Answer

Go to the .minecraft folder in %appdata% and open the launcher_profiles.json file.

Scroll to the desired profile name (e.g. Optifine). Then change the "type" to "Void-Null". Then restart the Minecraft launcher with beta mode enabled in the settings.

Example of mine when done:

"OptiFine" : { "created" : "2020-08-27T07:48:53.976Z", "icon" : "Grass", "javaArgs" : "-Xmx10G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M", "lastUsed" : "2020-12-02T18:16:50.180Z", "lastVersionId" : "1.16.4", "name" : "OptiFine", "type" : "Void-Null"
}

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