You can fix VBA Runtime Error 1004 in Excel Macro, like document not found, reference isn't valid, Paste method of worksheet class failed, etc, by following this post.

Encountering error 400 while running a macro in Excel? This guide will help you with multiple solutions to fix VBA error 400 in Excel.

Q: I received an error message in Excel stating that my workbook had “Too many cell formats, Excel encountered an error and had to remove some ...