How Security for Add-ins and Templates Is Handled When the Trust All Installed Add-ins and Templates Check Box Is Selected (829230)

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Macros in add-ins and templates may contain viruses. Macro security features help to protect your system from macro viruses.

To change your current security settings for macros, click Security on the Tools menu. On the Trusted Publishers tab, there is the Trust all installed add-ins and templates check box. When this check box is selected, the following changes are made in macro security:

• Add-ins that are stored in the following folder load on the start of Microsoft Office Excel 2003 without warning you of macros:

  drive:\Documents and Settings\user name\Application Data\Microsoft\Excel\XLSTART

• Add-ins that are stored in the following folder load on the start of Excel 2003 without warning you of macros:

  drive:\Program Files\Microsoft Office\Office11\XLStart

• Add-ins that are selected in the Add-Ins command on the Tools menu load on the start of Excel 2003 without warning you of macros.

If you click to clear the Trust all installed add-ins and templates check box, the following changes occur depending on the security level setting:

Security Level	Change
Very High	Add-ins that are not in trusted locations will not run.
High	Add-ins that are not in trusted locations will not run unless they are signed from trusted sources.
Medium	You will be prompted to enable or disable macros that are not in trusted locations and that are not signed by trusted sources.