Find File In Office 365. Navigate to Services Add-ins in the Office 365 Administration Center and select Office 365 Groups. There isnt a File tab in the online version.

Get File Properties from File Menu if you have Classic Menu for Office. Select Task View icon on the taskbar or press Windows logo key Tab and select an activity. Search and find the pst file you want to connect and then click OK.
Three places where I find my files in Office 365 1 Through the desktop app.
Office 365 Outlook for WindowsMacOS - Data files. There isnt a File tab in the online version. Thats where I found Word Excel PowerPoint etc. Following your tips I have searched for SPREADSHEETCOMPAREEXE under CProgram FilesMicrosoft Office and I found it under CProgram FilesMicrosoft OfficerootVFSProgramFilesX86Microsoft OfficeOffice16DCF.