To protect your computer against macro (macro: An action or a set of actions that you can use to automate tasks. Macros are recorded in the Visual Basic for Applications programming language.) viruses, the default security level in Microsoft Outlook is High. Also, be sure to use an up-to-date antivirus program.
You can change the security level by using this procedure unless your administrator has already implemented a security level for your organization and has made the other level options unavailable.
- On the Tools menu, point to Macro, and then click Security.
- Click the option you you need.
Only macros installed in trusted locations will be allowed to run. All other signed and unsigned macros are disabled. You can disable all macros entirely by setting your security level to Very High and disabling macros installed in trusted locations. To disable macros installed in trusted locations, click Tools, then select Macro and Security, and then click on the Trusted Publisher tab and “uncheck” the Trust all installed add-ins and templates option.
Note This also disables all Com Add-ins and Smart Tag .DLLs as well as macros.
When security it set to low, all macros are treated equally regardless of origin or certificate status. With low security, you receive no prompt or signature validation and macros are automatically enabled. Use this setting only if you are certain that all macros in your files are from trusted sources.
Note In Microsoft Office 2003 or later, a component checks all XML files that have references to XSL files for script that could be unsafe. If macro security is set to High, running this script is disabled. If macro security is set to Medium, the user is asked whether or not to run script in XSL files. If macro security is set to Low, the script is run.