Have you just downloaded a work PDF and suddenly found the file has the extension of a text file (TXT) or even no extension ...

Microsoft Outlook uses two file types for holding message, calendar, task and notes data: PST and OST files. PST files are created in the user's computer for non-Microsoft Exchange accounts ...

For each file type, you can select the Open & save checkboxes ... This allows you to read the file without potentially damaging your computer or network. If you wish to disable Protected View ...