AEM 6.4 Quickstart Jar file Not Working

[#1]

Increase the heap memory size to >1024 MB

Try running the below command from the command prompt with verbose option set.

java -Xmx1536M -jar AEM_6.4_Quickstart.jar -v

Hope this helps.

[#2]

So, I was having the same issue and the problem was solved after I uninstalled all JDKs(versions 11 & 14) and left only JDK version 8.

[#3]

This really worked for me, Thank you