This document discusses how to split large Outlook PST files that exceed the 2GB or 4GB size limit. It recommends using a PST splitter software to divide oversized PST files into smaller files by time or size. The guidance provided outlines a 7 step process to select PST files, choose a split criteria (time or size), add the files, and split them into smaller portions to resolve access issues with large files. System requirements are also listed for running a PST splitter program.