KenGreen1

@iedyl that's why theres a Java install process in the issue, try doing that workaround process, if it doesn't work, try reinstalling everything, and do the process all over again

@pizza999 at least u don't have to buy minecraft again (if the workaround did work (hopefully))

@bomburh This issue is happening a lot, and mojang is working on the issue, if u need it fixed rn, go to this link https://bugs.mojang.com/projects/MCL/issues/MCL-23025?filter=allopenissues and there's a whole process, easy enough to do (i hope), i already did it and it worked but for some people it doesn't work properly, anyways, u can go there and try to do it, is not technically a fix, but is a workaround for the issue.

It doesn't affect only version 1.19.3, it goes from 1.18 to the latest one, im having this issue, and been trying to find some information and solutions, but until i do all i can do is play on bedrock and wait for it to have a solution that works

I also have this problem, 

Unable to locate the Java runtime.
Error details: 0x00000000 - system: La operaci󮠳e complet󠣯rrectamente.
Filename on disk: javaw.exe
Path: C:\Users\Sebas\AppData\Local\Packages\Microsoft.4297127D64EC6_8wekyb3d8bbwe\LocalCache\Local\runtime\java-runtime-gamma\windows-x64\java-runtime-gamma\bin\javaw.exe
Exists: Nonexistent

Apparently for what i have found is something to do with "runtime\java-runtime-gamma\windows-x64\java-runtime-gamma\bin\javaw.exe". Apparently the file doesn't exist, even if u try to install java manually (which i may add, it's not supposed to require java manually, since it installs it automatically with the launcher).

Anyways, im not able to play versions from 1.18 onwards, on previous versions it works just fine, but it only happens with this ones, and i think is because the change of java versions and how the system works, until this gets fixed, i cannot try the new features on java, and have to do it on bedrock