This causes the PST files to close suddenly which can lead to their corruption. One of the instances, when this happens, is when Task Manager is used for shutting down MS Outlook. They can cause a great deal of damage to the PST files too and can cause them to corrupt as well. If your hard disk has bad sectors then there is a chance that your PST files will get corrupted quite often. These bad sectors are spots on the hard disk that can corrupt PST files if they get stored on them.
Issues with Hard Disk: The hard disk where the PST files are stored is vulnerable to bad sectors.
