Although setting or changing the location of PST files associated with a POP3 account is exceptionally straightforward, changing the location of the OST file for an Exchange, Outlook.com, or IMAP account is far more cumbersome.
Because these files may become quite large and you already have Windows installed, this may cause problems. You often don't have GBs of space to waste. Instead, you significantly discover this on your larger data disc if you invested in a speedy SSD drive.
Although you may use a Registry variable to force the placement of OST files, you'll need to remove and re-include the file and download all of your mail.
Using Symbolic Links is a practical and more accessible method. Using them is very straightforward, and they are an incredibly persuasive answer for this problem, despite the highly baffling issue around them and how they function.