How Do I Repair CRC Errors for a Zip File: 3 Smart Solutions

CRC, which stands for Cyclic Redundancy Check, is an error code that a lot of people encounter while extracting ZIP files. This error can occur due to file corruption, data issues, or problems like 7zip CRC failed, CRC mismatch, and other CRC errors. Therefore, if your Zip file is not opening because of a file CRC error or bad CRC, then you would have to implement some effective solutions. Here, I will guide you on how to repair CRC errors in a Zip file and eliminate them.

In this article

01 What you should know about CRC Errors in Zip files?

02 How to Repair CRC Issues for a Zip file?

03 Tips to Prevent CRC Errors in Zip Files

Part 1: What you should Know About CRC Errors in Zip files?

Before we learn how to repair a Zip file, it is important to know what exactly CRC errors are. When you compress a document, it assigns a unique value to the file, which is known as CRC (Cyclic Redundancy Check). While unzipping the file, the tool will again calculate the value, and it should match the existing CRC value. If the values are not matched, then it will result in a CRC error for the Zip file.

Here are some of the common reasons why the CRC error might happen while extracting your Zip file.

Part 2: How to Repair CRC Issues for a Zip file?

Now when you know the reasons for causing CRC issues in Zip files, let’s learn how to fix them. Ideally, I tried these methods to repair a Zip file and they worked pretty smoothly.

Fix 1: Download the File Again and Unzip it Using a Reliable Extraction Tool

As I have listed above, if your Zip file has not been downloaded or transferred entirely, then it can cause unwanted CRC issues. The easiest way to fix it is by following the same drill again.

Fix 2: Scan and Repair the Corrupt Zip File with an Anti-Malware Tool 

Another possible reason for encountering a CRC error with Zip files may be related to the presence of a malicious entity on your device. For instance, if the ZIP file or the local storage has been infected by a virus, then it can make the file corrupt and inaccessible.

If you are using the Zip file on your local system, then you can use any reliable anti-malware tool to fix it. Windows users can take the assistance of Microsoft Defender, which is the built-in anti-malware feature of the OS. To repair a Zip file in Windows 10, right-click the file and scan it with Microsoft Windows Defender.

Similarly, if you want to repair the Zip file on Linux, then you can any reliable anti-malware application to scan the storage. You can also install any trusted anti-virus application on your iOS or Android devices. To repair a corrupted Zip file on Android, you can use anti-malware apps from brands like Norton, Kaspersky, Avast, Avira, AVG, Quick Heal, or BitDefender.

Fix 3: Use a Zip Repair Tool on Windows or Mac

Lastly, if you are still getting a CRC error for your Zip files, then consider using any Zip repairing tool. You can try the Repairit ZIP File Repair that is freely available for Windows and can easily repair corrupt files.

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• Repair damaged Zip files with all levels of corruption, including Zip files not opening, Zip folder is invalid, CRC error, etc.

• Repair damaged or corrupted Zip files caused by any reason, such as system crash, file format change, virus attack, etc.

• Perfectly repair corrupted Zip files with a very high success rate, without modifying the original file.

• Automatically decompress, extract, and restore repaired files to their original states

• Enable batch repair for ZIP files and files larger than 1G.

• Repairit supports repairing damaged or corrupted PDF, Word, Excel, Zip, and PowerPoint files, support all file formats and versions.

To learn how to repair a Zip file in Windows 10/8/7 using this Zip repair tool, follow these steps:

Step 1 Download Repairit on your PC or Mac. Select File Repair from the main interface of Repairit and choose Zip File Repair, then upload your damaged Zip files.

Step 2 Click the Repair button and Repairit will start repairing the damaged Zip files.

Step 3 After the repairing process completes, you can click the Preview button to check the result and save the Zip file.

As you can see, a Zip file can be corrupted due to different reasons, leading to a CRC error. Thankfully, you can easily repair a Zip file on Windows 10, Linux, or Android. You can simply try either of these methods to repair the CRC error for Zip files and let us know about any other solution that worked for you in the comments below.

This video can help you fix your corrupted zip files with a step-by-step guide.

Part 3: Tips to Prevent CRC Errors in Zip Files

While repairing corrupted Zip files is effective, taking proactive steps can help you prevent CRC errors in the future. Here are a few simple tips:

Conclusion

As you can see, CRC errors in Zip files can occur for various reasons, but they are often easy to fix. By re-downloading the file, scanning for malware, or using a reliable repair tool like Repairit, you can quickly regain access to your compressed data.