This is potentially dangerous if you open a workbook that contains a virus (in the form of a macro built for malicious purposes).When you create a macro and are running Outlook with the default security settings, you are not able to run the macro at all or you’ll always get prompted first, unless you either tamper with the default security settings or sign your own code with a digital certificate. Doing this enables all macros to run in any workbook that you open.
Low Security - Event 1 Software does not recommend that you set your macro security level to " Low".The first time you open a workbook containing macros that are digitally signed by the publisher you can check the box entitled " Always trust macros from this publisher" (as shown above) to automatically enable macros from the publisher in the future. This setting disables all macros except for those that are digitally signed by a trusted publisher. High Security - If you only plan to use workbooks that contain digitally signed macros, you can leave your macro security level set at " High".Making Event 1 Software a trusted publisher will allow you to more easily enjoy the functionality of these templates. Many prebuilt templates from Event 1 Software contain macros with Event 1 Software's digital signature. Checking this box will enable macros for all other workbooks signed by the publisher without displaying the Security Warning window. Trusted Publishers - When the Security Warning window displays, if the workbook you are opening contains macros that are digitally signed you will see a checkbox entitled " Always trust macros from this publisher" (as shown above).When the Security Warning window displays, click Enable Macros to allow macros in your workbook to run (show me).
Excel's default security level is set to " High"
Resolution This article is not intended to provide complete information on the topic of Excel macro security or to provide a definitive answer for your specific security needs. This may disable certain functionality of the workbook. BackgroundWhen opening an Excel workbook or creating a new workbook from a template, macros may be disabled depending on your macro security settings in Excel.
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