What is hklm run?

HKLM\Run is a registry key in the Windows operating system that specifies programs to be run automatically when a user logs into the system. It is located under the HKEY_LOCAL_MACHINE hive, which means that the programs listed will start for all users on the computer. Modifying this key can be useful for managing startup applications, but caution is advised, as improper changes can affect system stability and performance.