ID: Q185946
The information in this article applies to:
When you try to create a data source for a Microsoft Excel 97 for Windows workbook, you may receive the following error message:
   Couldn't Decrypt File
This problem may occur if all of the following conditions are true:
    -and-
-and-
Method 1: Remove the workbook password
To work around this problem, remove the password from the workbook. To do this, follow these steps:
 1. Start Microsoft Excel.
 2. On the File menu, click Open.
 3. Locate and select the workbook with the password.
 4. Click Open.
 5. Enter the password for the workbook and click OK.
 6. On the File menu, click Save As.
 7. Click Options.
 8. Clear the password box and click OK.
 9. Click Save. Click Yes when you are prompted to replace the existing
    file with the same name.
You can create your data source without receiving an error message.
Method 2: Open the file in Excel
If you have the password protected workbook open in Microsoft Excel, you will be able to successfully create a data source for this workbook. However, you must have this workbook open when you use this data source or when you refresh a query that is pulling data from this data source.
This is by design of Microsoft Excel 97 for Windows.
For more information about workbook passwords, click Contents And Index on the Help menu, click the Index tab in Microsoft Excel Help, type the following text
   passwords, workbooks
Additional query words: XL97
Keywords          : kbdta xlquery 
Version           : WINDOWS:97
Platform          : WINDOWSLast Reviewed: February 6, 1999