Launcher results in "game crash"

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[0629/012718:INFO:GameCallbacks.cpp(193)] launcher/launcher (main) info Error occurred during initialization of VM
Could not reserve enough space for 1048576KB object heap

can you please use the bundled JRE 1.8.0_51, not an own one 1.8.0_171

"can you please use the bundled JRE 1.8.0_51, not an own one 1.8.0_171"

can you explain what you mean?  what is, and where is JRE 1.8.0_51?

In the environment field you wrote

Java version 8 build 171

but the Minecraft Launcher comes bundled with Java version 8 build 51.

Please use the latter and not version 171.

did.  still crashes

Out of ideas.

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is there a non java version I can download?

Yes, with your MC Java account there comes also the Windows 10 Edition. Go to https://mojang.com , log into your account , there you'll find the code for the win 10 edition.

Make sure there is enough RAM free for Minecraft to run.

This is a technical support request, which we do not handle on the bug tracker. Please use Community Support to help solve your issue.

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