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Security  Because macros can contain viruses, be careful about running them. Take the following precautions: run up-to-date antivirus software on your computer; set your macro security level to high; clear the Trust all installed add-ins and templates check box; use digital signatures; maintain a list of trusted publishers.

Depending on your macro (macro: An action or a set of actions you can use to automate tasks. Macros are recorded in the Visual Basic for Applications programming language.) security setting, when you open a macro, you will receive a warning and the macro may be disabled for installed templates (template: A file or files that contain the structure and tools for shaping such elements as the style and page layout of finished files. For example, Word templates can shape a single document, and FrontPage templates can shape an entire Web site.) and add-ins (add-in: A supplemental program that adds custom commands or custom features to Microsoft Office.) (including wizards).

1. On the Tools menu, click Options, and then click the Security tab.

2. Under Macro Security, click Macro Security.
3. Click the Trusted Publishers tab.
4. Clear the Trust all installed add-ins and templates check box.

Note  All templates, add-ins, and macros shipped with Microsoft Office 2003 are digitally signed by Microsoft. Once you add Microsoft to your list of trusted sources for one of these installed files all subsequent interaction with these files will not generate messages.