You can perform recovery of XLSX files with XLSX recovery tool. With XLSX file recovery software you will be able to repair corrupted .xlsx sheets in very less amount of time and without any alteration.
PST File – Split PST to split Large PST files (ANSI & PST) formats into multiple smaller PST files. Try demo version for split 50 Outlook PST items at time. No need for any technical skills to split large PST file into small PST file.