Deletes a subkey from the registry.

RegDeleteKey KeyName



Type: String

The full name of the registry key.

This must start with HKEY_LOCAL_MACHINE, HKEY_USERS, HKEY_CURRENT_USER, HKEY_CLASSES_ROOT, or HKEY_CURRENT_CONFIG (or the abbreviations for each of these, such as HKLM). To access a remote registry, prepend the computer name and a slash, as in this example: \\workstation01\HKEY_LOCAL_MACHINE

KeyName can be omitted only if a registry loop is running, in which case it defaults to the key of the current loop item. If the item is a subkey, the full name of that subkey is used by default.

Error Handling

An OSError is thrown on failure.

A_LastError is set to the result of the operating system's GetLastError() function.


Warning: Deleting from the registry is potentially dangerous - please exercise caution!

To retrieve and operate upon multiple registry keys or values, consider using a registry loop.

Within a registry loop, RegDeleteKey does not necessarily delete the current loop item. If the item is a subkey, RegDeleteKey() deletes the key itself. If the item is a value, RegDeleteKey() deletes the key which contains that value, including all subkeys and values.

For details about how to access the registry of a remote computer, see the remarks in registry loop.

To delete entries from the 64-bit sections of the registry in a 32-bit script or vice versa, use SetRegView.

RegCreateKey, RegDelete, RegRead, RegWrite, Registry-loop, SetRegView, IniDelete


Deletes a subkey from the registry.

RegDeleteKey "HKEY_LOCAL_MACHINE\Software\SomeApplication"