Iopagelocklimit Windows 11 May 2026

: Do not add or modify IoPageLockLimit on Windows 11. It is a relic from the 1990s and has no effect on modern systems. Focus on proper drivers and power settings instead.

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management : IoPageLockLimit Data type : REG_DWORD or REG_BINARY (in bytes, hex) iopagelocklimit windows 11

IoPageLockLimit is a legacy registry value that controlled the maximum amount of physical memory (in bytes) that a driver could lock for I/O operations (e.g., reading/writing to disks, network transfers, or sound buffers). Locked memory cannot be paged to disk, ensuring fast, uninterrupted data transfers. Important : IoPageLockLimit was designed for Windows 9x/Me and early NT kernels (up to Windows XP) . In Windows 11 (NT 10+) , it is deprecated and ignored by the system. Does It Work on Windows 11? No. Windows 11 uses a modern memory manager that automatically scales I/O lock limits based on available physical RAM. The system dynamically determines the maximum locked memory per driver, making manual tuning unnecessary and ineffective. : Do not add or modify IoPageLockLimit on Windows 11

Example: 4096 (decimal) = 4 KB → wrong format Correct: 0x1000 (hex) = 4096 bytes? No — actual value must be in , often entered as 4096000 (decimal) for 4 MB. In Windows 11 (NT 10+) , it is