Old Macros XL4 macros
If you use the old Excel macro language – known as XL4 macros – you may need to update a setting to keep using them.
This is the macro language before VBA was introduced in the Excel 5 back in the 90’s.
Not many people use these macros any more but there a couple of techniques that they are used for.
Microsoft will soon disable them automatically and you will need to turn them back on if you want to use them.
The setting to update is in the Trust Center Macro settings – see image below.