File Format & Compatibility

Fix CSV Downloaded as Excel 97 File in Windows

Amos Gikunda Sep 30, 2026 868 views

Question details

Users notice that their downloaded CSV files are displayed with an Excel 97 icon and file type description in Windows, leading to confusion about the actual file format.

How to Fix a CSV Downloaded as an Excel 97 File in Windows

Product: Windows File Explorer
Device & OS: Windows
Scenario: Downloading or exporting a CSV file from a platform like Anaconda or a web browser to a local Windows machine.
Observed behavior: Windows labels the plain text CSV file as an Excel 97 Worksheet due to default file associations, which can cause import errors in tools like Tableau if the file was also malformed during export.

Before you start

Enable visible file extensions in Windows File Explorer so you can accurately identify the file's true format before attempting any troubleshooting.

Solution 1Recommended

Verify File Extension and Check Raw Contents

Confirm that the file is actually a CSV by revealing its true extension and inspecting the data in a basic text editor.

Often, Windows simply uses the Excel icon for CSV files because Excel is registered as the default handler for the .csv extension. This does not mean the file was converted to a proprietary Excel format.

Enable File Extensions

Open Windows File Explorer, click the 'View' tab on the top ribbon, and check the box labeled 'File name extensions'.

Check the Extension

Locate your downloaded file and verify that the file name ends in .csv instead of .xls or .xlsx.

Open with Notepad

Right-click the file, select 'Open with', and choose Notepad or another plain text editor to ensure the contents are readable, comma-separated text.

Verify File Extension and Check Raw Contents

Understanding File Associations: A file type label in File Explorer merely describes the application associated with that extension; it does not change the structural format of the file itself.

Solution 2

Import CSV Data Using the Data Wizard

Use the built-in import wizard in your spreadsheet software to manually parse the CSV data, avoiding errors caused by direct opening.

Solution 3

Troubleshoot Anaconda Export Issues

Address situations where the file itself is malformed or excessively large due to the platform it was exported from.

Efficient Data Management

Seamlessly Manage and Import CSV Files with WPS Office

WPS Office Spreadsheet provides a robust and intuitive data import wizard, making it easy to correctly open, parse, and format CSV files without file mislabeling or compatibility issues.

1. Launch WPS Spreadsheet: Open WPS Office and create a new blank spreadsheet.
2. Import the Data: Click on the 'Data' tab in the top ribbon and select 'Import Data'.
3. Select the File: Choose 'Import Data from Text', locate your downloaded CSV file, and click 'Open'.
4. Apply Delimiters: Select the correct delimiter in the wizard preview window and click 'Finish' to successfully load your data.

Smart CSV import wizard with customizable delimiters, encoding, and text qualifiers.High compatibility with all Microsoft Office file formats including .xls, .xlsx, and .csv.Lightweight application that handles large datasets smoothly without freezing.

microsoft office alternative - wps office

Frequently Asked Questions

Why does my downloaded CSV file have an Excel icon?

Windows assigns icons based on the default program associated with a file extension. Because Excel is typically the default application for opening .csv files, Windows Explorer displays the Excel icon and labels the file as an Excel file, even though it is still plain text.

How do I change the default program for opening CSV files?

Right-click any .csv file on your computer, select 'Open with', and then choose 'Choose another app'. Select your preferred application (such as Notepad or WPS Office), check the box that says 'Always use this app to open .csv files', and click OK.

Why won't Tableau read my downloaded Excel 97 CSV file?

If your file was incorrectly generated or malformed during export (for example, from Anaconda), Tableau will fail to read it regardless of the file extension. You need to ensure the export process generated a valid, properly formatted plain text CSV file.

Does renaming a file extension from .xls to .csv convert the format?

No. Renaming a file's extension only changes how Windows identifies the file; it does not alter the underlying data format. To properly convert an Excel workbook to a CSV file, you must open it in a spreadsheet program and use the 'Save As' function.

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