I am facing an issue where my Outlook backup keeps failing because my PST file has grown too large. The file size has exceeded the limit, and now it’s causing errors during backup. I have read that compressing the PST file can help, but I am not sure about the safest and most effective way to do it without losing any data. Can anyone guide me on how to properly compress a PST file in Outlook, or suggest reliable tools/methods to make the process easier?