Fixing BadZipFile: File is not a zip file [Ultimate Guide]

When you try to unzip or extract a ZIP file, you might encounter an error message that says: `badzipfile: file is not a zip file.` This error typically occurs in Python, indicating that the ZIP file you're dealing with is corrupted or has an incorrect format. If you've stumbled upon this article while facing this issue, congratulations! You're in the right place. Here, we'll guide you through two methods to resolve ZIP errors you might encounter with Python 3.9 and openpyxl:

Utilize the Fixo File Repair tool to repair corrupted Zip files and resolve the zipfile.BadZipFile issue.

When creating a Zip file with Python, you might accidentally damage it. In such cases, you can rely on a Zip file repair tool to fix the issue accurately. The Fixo File Repair Tool could be your best solution.

Before presenting this tool to you, we have studied numerous cases of corrupted Zip files. Let's see what this repair tool can do:

"Fixo File Repair Tool"

• Fix Invalid Zip File Structure
• Solve Corrupted Archive File
• Handle Unexpected End of Archive

You can read the instructions for repairing a damaged or corrupt Zip file here.

Step 1: Download and run Fixo on your computer or laptop. Select "File Repair" to fix corrupted Office documents, including Word, Excel, PDFs, and others. Click "Add Files" to select the damaged document.

Step 2. Click “Repair All” to fix multiple files at once. To repair a single document, hover your cursor over the target file and click “Repair.” You can also preview the document by clicking on the eye icon.

Select the document to repair

Step 3. Click “Save” to save the selected documents. Choose “Save All” to save all repaired files. Select “View Repaired Files” to locate the folder with your repaired files.

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Download the ZIP file again to fix the “Not a valid ZIP file” issue

If your ZIP file was downloaded from the web, it may be infected with malware or some other unknown virus. If the download was interrupted, you can re-download the file from the internet like this:

Step 1: Firstly, delete the Zip file that you were trying to run when you encountered the error from your computer.

Step 2: Go back to the website where you downloaded the ZIP file and download it again.

It's best to save it to a safer location, just in case. Now, you should be able to open or unzip the ZIP file again.

FAQs on "File is not a Zip File" Error

With the aid of the methods described above and the FAQ in this section, you should be able to resolve any nasty ZIP errors that come your way.

1. How do I fix the "BadZipfile: Not a ZIP file" error?

First, make sure your Zip file has the correct file extension ".zip". Python relies on this extension to recognize the file as a Zip format. If you're certain the extension is correct, you might seek assistance from a file repair tool like Fixo.

"Bad zip file" means that there is an issue with the ZIP file, such as it being corrupted, incorrectly formatted, or unable to be opened or extracted properly.

This is most often caused by transmission errors, especially with Zip files downloaded from the Internet.

Last Words

In this article, we've discussed how to fix the “File is not a Zip file” error using two simple solutions. However, the most effective and time-saving method would be to use the Fixo File Repair tool. Download the software now to save your corrupted/invalid Zip files and resolve the “File is not a Zip file” issue.