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File Repair

Perfectly repair Zip files with various corruption issues.

  • Fix all Zip file issues like Zip not opening, Zip file invalid, etc.
  • Enable batch repair for ZIP files and files larger than 1G.
  • Automatically decompress, extract, and restore repaired files to their original states.
  • Provide internal hierarchy preview to verify repair results.
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5 Methods to Fix Zip File Is Invalid Problem

A file having Zip format is an extension file that is a compressed form of data and is widely used all over to store information. It is like all other available file formats, a collection of one or many file folders that are compressed into one to give it ease of transportation and compression. The Zip format is usually used for downloading software. The zipping of a software program makes it save space on the server while decreasing the time to download files and organize the hundreds or thousands of file information in a single Zip file.

Now here you will learn about the problem with zip file invalidity and the cure to it!

Single files also called ´archives´ are termed zip files because they contain compressed one or multiple files. It makes it easy for information to be kept in an organized manner which aids in transportation, downloading, sharing, and storing data. The zip files make all the processes faster and more efficient and this makes it the most popular format used for compression of files utilized in the windows, and the most popular compression utility is the WinZip.

Uses of zip files

  • The data is compressed, and less space is used
  • The zip format is time saving and efficient
  • Transferring the data becomes easier
  • Only one download gives you access to all information
  • Associated files can be grouped together
  • Large files can be stored or converted into less spacious items through compression of the data

Part 1: What Causes Zip File Invalid Errors?

Zip files encounter errors in many terms and let´s see what the causes of these errors are before we dig deep into solving them:

  • The virus is the greatest cause of zip file errors
  • MS office files with medium or low security can also cause zip file errors
  • Slow download speed can also make the zip file invalid error
  • The compressor tool is faulty to cause the error
  • The downloaded file is corrupted originally which results in the error

When the message of the zip file invalid is shown, you lose access to information and cannot extract files from the zip folder. This can be a huge problem, but every problem has its solution and that´s what we´re looking for!

Let´s see the different methods we can use to repair the zip file invalid error.

Method 1. Reinstallation of The Compression Client

As experienced by other users, the first obvious thing that comes to mind with compression files is the compression client that can be causing the error. Reinstalling the software used proved to be beneficial for them and solved the problem.

To reinstall the compression client to avoid zip file invalid error, the steps are listed below:

Step 1: First, press the Windows key + R to open up a run box.


Step 2: Type ´appwiz.cpl´ and hit enter to open the programs and features

Step 3: Scroll through the list and uninstall the decompression application that shows the error (WinZip, WinRar, 7zip, etc.)

Step 4: Once it has been uninstalled, use your browser to get the latest version available of the decompression clients which may be:

  • WinRar
  • WinZip
  • 7zip

Step 5: Now reboot the computer after installation and check if you can extract the file again

Tip: if it is your laptop/notebook, try using Reimage Plus which is software to scan the repositories and also replace and repair corrupt and missing files.

Method 2. Using Another Free Compression Software

It may not sound like a proper fix, but many users reported that they managed to solve the problem by having another free compression software like 7zip.

Several third-party solutions can be used, but 7zip is the most convenient. For a quick guide to its installation and avoid the 7zip file invalid error you can always use:

Step 1: Visit the website to get a 7-zip installer according to your windows architecture


Step 2: Open the installer and follow the guidelines

Step 3: Once installed, the zip files on the right-click will show an additional menu and give you the same features as that of a native client.


Method 3. Zip on A Drive That Utilizes NTFS

NTFS can be used effectively for the compression of files. It is the easiest method and there is no need to compress files or zip or unzip every time a file is needed. It is an automatic process and does not affect the performance of the file or software.

On Windows 10, you can utilize the following steps to compress files and folders using NTFS:

Step 1: Open file explorer

Step 2: Browse the folder you want to store information to


Step 3: Click the home button

Step 4: Click the new folder button

Step 5: Or you can just create a new folder by using the shortcut keys: Ctrl + Shift + N

Step 6: Type a name to the folder and press enter

Step 7: Right-click to select the properties option

Step 8: Click on the general tab


Step 9: Then click the advanced button

Step 10: Under the ´compress or encrypt attributes´ section, check the compress contents to save disk space option


Step 11: Click OK

Step 12: Then Apply button to save your settings

Step 13: In the confirm attribute changes dialogue box, select the option to apply changes to all


Step 14: Click OK

By completing all the steps, you have just created a folder that will compress all files saved in it and occupy lesser space than usual. The existing files and the future files all will have the same results. These steps can be used on a singular file too. If you see a two-arrow sign in the right corner, then be sure the settings are working.

To check how much space you saved by this method, right-click the folder and select properties. Then check the size which gives the uncompressed file size and the size on disk gives the size of the item after compression. If you want to revert the changes made you have to follow the same steps and clear the compress contents to save the disk option.

Method 4. Run CMD to Repair/Restore Corrupted Or Invalid Zip Files

The following method can also be used for erasing zip file invalid errors:

Step 1: Open the command prompt as administrator.

  • For Windows 10/8.1users: right-click start menu>click command prompt (administrator)
  • For windows 7/8/Vista/XP users: click start> All programs>accessories>command prompt> run as administrator

Step 2: Change the directories to the folder where the current corrupted zip file is located

Step 3: Type: ¨C:\Program files\WinZip\wzzip¨-yf zipfile.zip> press enter.

You can also reveal the damaged or invalid .zip files by replacing the name of the file with zipfile.zip

Method 5. Restore Invalid/Corrupted Zip Files with Zip Repair Software

It is a relatively easy method for users who prefer simple methods to restore the zip files showing zip file invalid error with Wondershare Repairit - File Repair

  • Repair damaged files with all levels of corruption, including blank files, files not opening, unrecognizable format, unreadable content, files layout changed, etc.

  • Support to repair all formats of ZIP, PDF, Word, Excel, PowerPoint, and Adobe files.

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

  • No limit to the number and size of the repairable files.

  • Support Windows 11/10/8/7/Vista, Windows Server 2003/2008/2012/2016/2019/2022, and macOS 10.10~macOS 14.

It handles all kinds of corruption of zip files and password-protected files can also be recovered and repaired through this software. Here is a step-by-step guide to show you how to repair corrupted or invalid Zip files with Repairit:

Step 1: Download and install Wondershare Repairit File Repair software on your PC. Select File Repair and choose Zip File Repair, then upload the damaged Zip files you want to repair.

add zip file

repair zip file

Step 2: Click the Repair button to start the Zip repair process, then Repairit will start scanning and repairing the damaged Zip files.

repair zip file

Step 3: After the repairing process finishes, you can use the Preview button to check the result and save the file to your local storage.

preview and save zip file

This is all about the zip file invalid error and how to correct it. Hope it covers all your problems and provides a solution to them!