I developed a workbook with Excel 2000 that is password protected and runs with a lot of macro validation using VB codes. A user is trying to access this with MS Excel 2003 and every time she keys an input into any of the cell that they are allowed to enter data into, an annoying little box pops up saying to enter a password to unprotect the sheet. Anyone knows what to do about using this Excel 2000 protected workbook with Excel 2003 and get around this prompt? I cannot afford to unprotect the workbook/worksheet. I included code for userinterfaceonly = true to avoid this problem. Shouldn't this work the same in 2003's version.