How to PST repair? The simple answer to it is to download the trial version of Kernel for Outlook PST repair tool to perform PST file recovery and preview them in detail. However, to save all the recovered files to the desired location, you need to buy the licensed version of the tool. Because the free version permits you to save only 25 items from each folder. This way you can get answer to “How to PST repair” in the most efficient manner.