Fixing “Excel has detected that filename is a SYLK file but cannot load it” error.
You have a TXT or CSV (comma-separated variable) file on your computer, and you have no idea what it is and don’t know what program can be used to open it. When you try to open it in Microsoft Excel, you’re getting the “Excel has detected that filename is a SYLK file but cannot load it” error.

smallwei 10:00 am on October 29, 2009
This problem occurs when the file that you’re trying to open has uppercase letters “I” and “D” as the first two characters.
For example, your file contains:
To fix it, either update ID to lower case “Id”, or you can add an apostrophe at the beginning of the first line of text.
How to Insert an Apostrophe:
To add an apostrophe to the beginning of the first line of text in your file, follow these steps: