Microsoft has disabled Excel 4.0 macros to protect you, the user
(Windows Phone Central)

Microsoft said this was coming, and now it has. What you need to know In 2021, Microsoft confirmed it would disable Excel 4.0 macros by default. Preview builds saw the new default instituted first and now the change is live for everyone. Admins can configure the new default. Microsoft`s not one to let its Office apps invite security threats, hence why it`s cracking down on macros, otherwise known as a potential gateway for malware. No longer will Excel users have to fear for their lives when opening an Excel file only to end up infecting their system with all sorts of digital terrors. Microsoft made it clear this change was on the way a long, long time ago, so the company`s reaffirmation that it has followed through on its plans should come as no surprise. Per Microsoft, `this setting now defaults to Excel 4.0 (XLM) macros being disabled in Excel (Build 16.0.14427.10000) Per the original blog post, Administrators can also use the existing Microsoft 365 applications policy cont...