# EnvUpdate

Notifies the OS and all running applications that environment variable(s) have changed.

    EnvUpdate

### ErrorLevel

[v1.1.04+] This command is able to throw an exception on failure. For more information, see Runtime Errors.

ErrorLevel is set to 1 if there was a problem or 0 otherwise.

### Remarks

Refreshes the OS environment. Similar effect as logging off and then on again.

For example, after making changes to the following registry key on Windows NT/2000/XP or later, EnvUpdate could be used to broadcast the change: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Session Manager\Environment

### Related

EnvSet, RegWrite

### Example

    EnvUpdate