How to fix corrupt ZIP file after download [Easy Guide]

by Vlad Turiceanu
Vlad Turiceanu
Vlad Turiceanu
Passionate about technology, Windows, and everything that has a power button, he spent most of his time developing new skills and learning more about the tech world. Coming... read more
Affiliate Disclosure
  • If a ZIP file is corrupted after download, don't assume it's a malware issue.
  • Indeed, running a scan is useful, but the browser or a slow connection might be equally responsible.
  • Using a trusted ZIP tool such as WinZip is important to keep the files intact.
  • Another useful tip is to download the ZIP file via the FTP server.
Fix corrupt ZIP file after download
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Plenty of users describes that they are in the unfortunate position of wanting to open a ZIP file, just to discover that it has been corrupted after download.

It gets even more frustrating since the same ZIP seems to open correctly for others. That’s a sign that the issue may not be with the original file.

The corruption could happen during the download or even at a later point, in the storage. Therefore, it’s most likely related to your file archiver, the antivirus that you use, and not only.

Just take a look at our comprehensive tips below and solve the issue right away.

How do I fix corrupted download files?

1. Use third-party software

Try out WinZip

Imagine yourself facing the same situation of downloading large ZIP files, trying to unzip them, and eventually getting the same corruption notification over and over again.

To prevent that from happening, make sure that you use a reliable file archiver, such as the one developed by WinZip Computing.

WinZip can easily finish downloading and unzip all major file formats, including zip, rar, gzip tar, and cab, while your private data can be password-protected and encrypted with 256-bit AES encryption.

Other useful options are maximum flexibility to zip files and folders, easy management of files on your system, cloud, and network, along with decoding capabilities for B64, HQX, and UUE files.

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Try using Opera browser

Another option would be to give a try to something new. We’re talking about a Chromium-based web browser that cannot disappoint and never prevents you from enjoying ZIP files.

Opera guarantees speedy performance, a handy battery saving mode, a built-in VPN, and best of all, no corrupt file errors are part of the package.

And if you’re afraid of the change, let us remind you that you will automatically be prompted to import all data from the old browser. 


Is your ZIP file corrupted after download? This may be a browser-related issue, so don’t hesitate to give a try to Opera!

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2. Check your antivirus

Computer malware, Trojans, and worms can easily damage your personal computer, steal your private data, and not only. So using an antivirus tool is mandatory.

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However, if your antivirus of choice slowly checks the files you’re downloading bit by bit, it could delay the entire process and cause ZIP file corrupted issues.

Temporarily turn if off to confirm this scenario and later on, think of a different option. Today’s Internet provides a variety of open gates for virus attacks, yet ESET closes them all.

This is possible thanks to an unbeatable daily updates mechanism of antivirus database definitions, not to mention that it’s speedy and never interferes with your system.

This happens all the time when using other tools, so the change most likely sounds like music to your ears.

4. Configure Internet Explorer

  1. Click Start and open the Control Panel.
  2. Don’t hesitate to change the Control Panel view if it is in the Category view.
  3. Up next, open Internet Options from the Control Panel.
  4. Click the Advanced tab.
  5. While here, untick the HTTP 1.1 box.
  6. Confirm your action by clicking OK.

Internet Explorer used to be the most popular web browser, yet things have changed drastically in the past few years.

It has been successfully replaced by Microsoft Edge as the default browser in Windows 10, with the promise of more productivity continuous browsing from your phone to the PC.

So, if you still have Internet Explorer, do note that it frequently causes all sorts of issues. Therefore, you can try to configure Internet Explorer as described above or switch to Opera in no time.

5. Verify Internet connection

Another common reason for these issues is precisely the lack of stable Internet speed for the download itself.

Fortunately, you can use one of these great Internet speed testers for Windows 10 for a precise answer that could nail down the culprits’ list.

If you do confirm an unstable Internet connection issue, this clearly turns into a problem for downloading ZIP files. Also, don’t hesitate to make sure that your cable is not damaged.

6. Redownload the ZIP from the FTP server via FTP

If the ZIP file corrupted after the download issue is still there, perhaps you need to try downloading it from the FTP server via FTP rather than HTTP.

As you can see, that’s a standard network protocol dedicated to transferring files from one host to another host over a TCP-based network, so do give it a go.

There are some of the most useful solutions that we recommend for everyone to try when ZIP files get corrupted after download.

If you happen to discover any other useful tips, please let us know in the comments section below.

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