Microsoft Disabling Excel 4.0 Macros by Default
Microsoft Disabling Excel 4.0 Macros by Default
Joel Rollins

Microsoft Disabling Excel 4.0 Macros by Default

Microsoft announced last year in an email to Microsoft 365 customers that it planned to disable Excel 4.0 macros by default to protect customers from malicious documents

Excel 4.0 macros, aka XLM macros, were first added to Excel in 1992. They allowed users to add commands into spreadsheet cells that were then executed to perform a task. Unfortunately, we soon learned that (like any code) macros could be made to perform malicious tasks.

In July 2021, Microsoft released a new Excel Trust Center setting option to restrict the usage of Excel 4.0 (XLM) macros. As planned, this setting is now the default when opening Excel 4.0 (XLM) macros.

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