What is #n/a error in vlookup? How to vlookup and return date format instead of number in excel? Excel Vba Basics 19 Using Vlookup In Vba - Alternate Method Free Workbook Excel Excel Spreadsheets If a new column is inserted into the table, it could stop your vlookup from working. Why is my vlookup not working with numbers . Because this is entered as an index number, it is not very durable. To fix this error, you must check and properly format the numeric values as “ number.”. In the example shown, the formula in h3 is:. Leading and trailing spaces #3. For example, cells with numbers should be formatted as number, and not text. The vlookup function is used frequently in excel for daily work. In the data entry table, a vlookup formula should get the category name, based on a product's category code. Also, ensure that the cells follow the correct data type. Multiply both corresponding columns by * 1 (and then remove formulas) to make sure all cells in both corre...