VirtualAlloc fails on specific memory address

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typedef struct _SYSTEM_INFO { // sinf
union {
DWORD dwOemId;
struct {
WORD wProcessorArchitecture;
WORD wReserved;
};
};
DWORD dwPageSize;
LPVOID lpMinimumApplicationAddress; !!!
LPVOID lpMaximumApplicationAddress; !!!
DWORD dwActiveProcessorMask;
DWORD dwNumberOfProcessors;
DWORD dwProcessorType;
DWORD dwAllocationGranularity;
WORD wProcessorLevel;
WORD wProcessorRevision;

} SYSTEM_INFO;