Search notes:

%LOCALAPPDATA%\Microsoft\WindowsApps

This directory contains exe files that are all 0 bytes. Some exe files I encountered include:
Update 2024-01-19: On a Windows 11 machine, I found:

Reparse points

These files are shown as zero points because they're in fact reparse points
Unfortunately, it's not possible to get the link target with the following Powershell pipeline:
get-childItem -file  C:\Users\rene\AppData\Local\Microsoft\WindowsApps | select-object mode, linkTarget, linkType, name

Index

Fatal error: Uncaught PDOException: SQLSTATE[HY000]: General error: 8 attempt to write a readonly database in /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php:78 Stack trace: #0 /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php(78): PDOStatement->execute(Array) #1 /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php(30): insert_webrequest_('/notes/Windows/...', 1758201369, '216.73.216.150', 'Mozilla/5.0 App...', NULL) #2 /home/httpd/vhosts/renenyffenegger.ch/httpsdocs/notes/Windows/dirs/Users/username/AppData/Local/Microsoft/WindowsApps/index(76): insert_webrequest() #3 {main} thrown in /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php on line 78