Pagefile Settings Windows 11 May 2026

1. Overview The pagefile (pagefile.sys) is a critical system file used by the Windows memory manager. When your system’s physical RAM becomes full, Windows moves less-frequently accessed data from RAM to the pagefile on disk. This process, known as paging (or swapping), prevents out-of-memory errors and ensures system stability.

For enterprise deployments, use Group Policy ( SetPagingFile ) to standardize pagefile configurations across Windows 11 endpoints. pagefile settings windows 11