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page fault Last modified: Friday, February 15, 2002
An interrupt that occurs when a program requests data that is not currently in real memory. The interrupt triggers the operating system to fetch the data from a virtual memory and load it into RAM. An invalid page fault or page fault error occurs when the operating system cannot find the data in virtual memory. This usually happens when the virtual memory area, or the table that maps virtual addresses to real addresses, becomes corrupt.
	Related Categories Virtual Memory Related Terms invalid page fault MMU paging virtual memory