Search notes:

Registry: HKEY_CURRENT_USER\Control Panel\International\User Profile

Languages

The value is a list that is new line separated, such as
en-CH
en-US
de-CH
en-GB
Each of these values seem to correspond to an equally named subkey.
This list seems also to be returned by the PowerShell cmdlet get-WinUserLanguageList.
TODO: How is it related to HKEY_CURRENT_USER\Keyboard Layout\Preload

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/...', 1759391299, '216.73.216.42', 'Mozilla/5.0 App...', NULL) #2 /home/httpd/vhosts/renenyffenegger.ch/httpsdocs/notes/Windows/registry/tree/HKEY_CURRENT_USER/Control-Panel/International/User-Profile/index(47): insert_webrequest() #3 {main} thrown in /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php on line 78