The outlook is one of the best email clients that is built to keep you connected across your devices with powerful tools and apps. It can store email, contacts, notes and calendar, task manager and many other things in the form of PST files. But sometimes the file gets corrupt and you can't get access of you important PST files. There are many reasons due to which Outlook PST file get corrupted. If your hard disk has some bad parts and your PST files are stored on that part then it will get corrupt. If suddenly there is a power failure when you are accessing in PST files that may damage your PST files. Many time your computer gets virus attack and it will infect or damage the PST files. To quit from outlook their is a process like you save all your changes and then get exit but if you shut down outlook abnormally you can damage your PST files.
