A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
Hello Mike Carron, thanks for posting this in our community.
The Run-time Error 1004 in Excel usually occurs when VBA (Visual Basic for Applications) encounters an issue while trying to access or manipulate a workbook, worksheet, or range.
This error can happen due to several reasons. The file you are trying to open may have an incorrect or incomplete path, or the file might not exist in the specified location. It can also occur if the workbook or sheet is protected, which prevents certain operations. Another common cause is a corrupted Excel file that is damaged or partially unreadable.
Please see this related thread 1004 error fix, which might help resolve your issue.
Kind regards,
John Oli