SECURITY RISK Microsoft has blocked macros rom running because the source of this file....

Hi,

Can you help?

I've been running this spreadsheet for many years and suddenly I have this error.

SECURITY RISK Microsoft has blocked macros rom running because the source of this file is untrusted.

I've had this before and gone into the options and clicked the box which said something like, 'allow macros'.

I am running Microsoft 365 and Excel is Version 2402 (Build 17328.20184 Click-to-run)

I didn't create this file and I'm not experienced in this field.

File attached.