That was my original thought, but it is set to show system and hidden files.

To replicate:
I did a search using FreeCommander XE. I did a search for *.pst. It finds the file ...

The backup software is Macrium Reflect, it stores the data in a file named 9C73BCC9840F695A-00-00.mrimg. To my knowledge, there is no other backup software running.

When I tried to follow the...

S:\Tech_Julian\Julian\Windows2019Recovery\Julian\My Documents\Outlook Files
S:\NoiseLastWindows10\Documents and Settings\Julian\Documents\Outlook Files
S:\NoiseLastWindows10\Users\Julian\My...

Windows 10, Version 10, Build 18362.418,
Outlook 2013 (Part of office 2103) .

I have a pst file stored at
C:\Users\Julian\Documents\Outlook Files\julian@provider.pst

I have a Storage drive...

I have several drives and encrypt my OS drive, two storage drives and my Virtual Machine drive.

I have two drives I use to audio editing and two more for video editing. Those are not encrypted....