XL: "Cannot Open Protected File" Error Message When You Open Password Protected WK3 or WK4 File

When you try to open a Lotus 1-2-3 WK3 or WK4 file that is password protected, you receive the following error message:
NOTE: Microsoft Office 2000 has built-in functionality that allows you to get more information about difficult-to-troubleshoot alerts or error messages. If you want to enable this functionality for this and other error messages in Microsoft Office 2000, please download the Microsoft Office 2000 Customizable Alerts file from the Microsoft Office Update Web site at the following address: NOTE: If you reached this article by clicking the Web Info button in an error message, you already have Customizable Alerts enabled.

Microsoft Excel cannot import password protected Lotus 1-2-3 files saved in the WK3 or WK4 file format.

Microsoft Excel can import Lotus 1-2-3 files that are not password protected or that are saved in the WKS or WK1 file format. To open the file in Excel, reopen it in Lotus 1-2-3 and do either of the following:

• Resave it without the password.
  
  -or-
  
  
• Resave it as a WKS or WK1 file. Note that if you save the file in this format, Excel prompts you for the password when you try to open the worksheet.