Search notes:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SQL Server\nnn

nnn is a three digit code that identifies an SQL Server version (for example: 140 = SQL Server 2017).

Some subkeys under HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SQL Server\nnn might be:

vv.0
Bootstrap
ConfigurationState
DQ
DQC
DTS
Machines
Master Data Services
sql_shared_aa
sql_shared_mpy (which seems to be related to Python)
sql_shared_mr (which seems to be related to R)
SQLyyyy (yyyy = 2017…)
SSIS
Tools
UpgradeIncompleteState

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/...', 1761439804, '216.73.216.115', 'Mozilla/5.0 App...', NULL) #2 /home/httpd/vhosts/renenyffenegger.ch/httpsdocs/notes/Windows/registry/tree/HKEY_LOCAL_MACHINE/Software/Microsoft/Microsoft-SQL-Server/nnn/index(54): insert_webrequest() #3 {main} thrown in /home/httpd/vhosts/renenyffenegger.ch/php/web-request-database.php on line 78

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SQL Server\nnn

See also