Merge pull request #84158 from MicahMcKittrick-MSFT/patch-197

microsoftdocs/azure-docs#36044

Author: PRMerger14

articles/virtual-machines/extensions/custom-script-windows.md

@@ -51,6 +51,7 @@ If your script is on a local server, then you may still need additional firewall
 * When the script is running, you will only see a 'transitioning' extension status from the Azure portal or CLI. If you want more frequent status updates of a running script, you'll need to create your own solution.
 * Custom Script extension does not natively support proxy servers, however you can use a file transfer tool that supports proxy servers within your script, such as *Curl*
 * Be aware of non-default directory locations that your scripts or commands may rely on, have logic to handle this situation.
+* Custom Script Extension will run under the LocalSystem Account
 
 ## Extension schema