The result is "FALSE" when you use the ISBLANK() function in an Excel spreadsheet
Symptoms
When you use the ISBLANK() function in a Microsoft Excel spreadsheet, the result is "FALSE". This behavior occurs even though the cell appears to be empty. Additionally, this behavior occurs even though the formula bar may show that nothing is in the cell.
Cause
This behavior may occur when the cell contains a zero-length string. A zero length string may be a result of the following conditions:
- A formula.
- A copy and paste operation.
- A cell that contains a zero-length string is imported from a database that supports zero-length strings and that contains zero-length strings.
Workaround
To work around this issue, clear the zero-length string from the cell. To do this, select the cell, click Edit, and then click Clear All.
In addition, you can also check whether a cell contains a zero-length string by using the LEN function. For example, if the cell you are checking is A1, the formula will be =OR(Len(A1)=0, Isblank(A1)).
More information
To create a zero-length string in Microsoft Excel, use any of the following methods:
Type a formula that evaluates the value "" in a cell.
Type a single apostrophe (') in a cell.
Copy a cell that contains either of the earlier values, and then paste only the values in another cell.
Import data from a database that supports and that contains zero-length strings.
If you use the third method or the fourth method in the bulleted listed to create a zero-length string, the formula bar is blank, but the cell is not.