VirtualAlloc() failed: [0x00000008] give error in my windows server 2008 R2 and stop my Apache for high request

I am using Xampp and Apache in my Windows Server 2008 R2. In normal visitor, my CakePHP 3.5 working perfectly but when real time request increase more then 150, my apache stopped unexpectedly.

Here is my error.log report

    VirtualAlloc() failed: [0x00000008] Not enough storage is available to process this command.
    VirtualFree() failed: [0x000001e7] Attempt to access invalid address.

Is there any solution or i need to take my application in Ubuntu server for re-structure my OS platform. Can anyone give me what can i do now?