The system prevent me send Excel file, told me there is a virus

The system prevent me send Excel file, told me there is a virus

Help me,

Today, my co-workers ask me they cannot send the file to others because the system told that there is a virus on the Excel file. This is a file that they use day-by-day and there is no problem until today. So we cannot send the file and work together with data in the file.

Please review and un-block the file. If need, I will send the file to you to verify it.

Thank you.