Q: How do I fix the 7-zip headers error I encountered?
“I tried to extract the archive files I compressed with 7-zip but I got a “Headers Error” message. I have important data I cannot afford to lose. Please, how do I fix this error?”
7-zip is a software that is used to compress a large number of files on computers, the format of which is .7z. However, this compressor is prone to corruption which causes errors such as the “headers” error. Nobody likes encountering errors when using their computer so seeing an error after downloading a zip file can be frustrating, especially since the error makes opening the zip file an impossibility.
Sometimes, your computer may be infected with virus from downloads, floppy disk or through the executable file you introduce into it from another infected computer; you may not realize there is a problem until you get the error message preventing you from extracting your Zip files. Therefore, this article will show you how viruses and other factors cause the headers error to your Zip files. More importantly, how to fix these errors using some methods, the most important being with the use of Stellar File Repair.
Part 1: Why do I See “Header Corrupt” Messages When I Run Self-Extractors?
When running self-extractors, you may run into a “header corrupt” error message on your screen, for instance, the WinZip “header corrupt” message shows like this:
Below are major reasons why you may see the “header corrupt” error message when trying to extract Zip files:
The “header corrupt” message may be due to complications in the process of installation of programs you have downloaded, such as WinZip, 7-zip, Matlab, PalTalk and so on. Therefore, there is a great chance that these applications are experiencing a malfunction in getting installed, thereby causing you to see the “header corrupt” error message.
The “header corrupt” messages that show up when running self-extractors could be because your system has been infected by various virus programs. Here, particular emphasis is placed on the CIH virus as a cause of this error. CIH virus is a highly destructive Microsoft Windows virus which renders your system vulnerable and overwrites important information on your infected system. It may go as far as destroying your system BIOS. The CIH virus has been found to be the most common cause of this error in a great number of executables files, such as self-extracting Zip files.
In addition, self-extractors can become corrupted when an error is introduced to the file during the process of downloads, for instance noise from phone lines. It could also be because of an interruption from the internet when you are downloading the program.
The header error can also occur due to a sudden shutdown of your system as a result of power failure. When you are still in the process of extracting or uncompressing your zip file and a system shutdown interrupts it, you may not be able to access the file when next you try to extract it.
Part 2: How to Fix 7-zip Header Error
Method 1: Use Another Free Compression Software
The problem of opening your zip files with 7-zip can be resolved if you attempt using another free compression software in place of 7-zip. There are many other compression software available online for free; 7-zip is not the only open-source tool out there. Some of the best alternatives to 7-zip are briefly introduced below:
WinZip: This is one of the most popular compression software used for both compression and extraction of files, as well as for the sharing and protection of your files with efficiency. Its encryption is of a banking-grade and it supports the zipping and sending of large files using its ZipSend feature.
WinRar: Another popularly used utility tool, WinRar is great for the compression of multimedia files. You can also compress files in batch using the WinRar feature called “solid archive box”. Although it mainly works with “rar” files, WinRar also supports compression of other formats, one of which is the “zip” format.
PeaZip: The PeaZip free compression tool is the ideal tool to use if you work with Zip files regularly. It makes file compression and archiving very easy. This file compressor software supports over 150 various formats with its large number of advanced features.
Zipware: This is an excellent file compression software which works on Windows-based systems. All major archive formats are supported by Zipware for both small and large files. You can as well perform your compression functions directly from Windows Explorer.
These are just a few from the many options out there for file compression so you can check them out.
Method 2: Run CMD to Repair/Restore Corrupted or Invalid ZIP Files
Another method of fixing the header error of your 7-zip file is to use the command prompt i.e run CMD to repair or restore the corrupted/invalid Zip file. Use these steps and you will fix the error:
Step 1: Open the “Command Prompt” of your system as an administrator and not as a standard user. The steps to do this vary for different Windows OS versions as seen below:
For Windows 7, Vista, 8, and XP:
Select the “Start” button
Go to “All Programs” and then “Accessories”
Right-click on the “Command Prompt” button and opt for “Run as administrator”
Right-click on the “Start” button
Select the option “Command Prompt (Admin)
Step 2: Change the directories to the original location of your corrupt Zip files.
Step 3: Type in the command:
“C:\Program Files\WinZip\wzzip” –yf zipfile.zip
Step 4: Press the “Enter” key on your keyboard to run the command. Note that instead of “zipfile.zip”, you may decide to use the name of your Zip file in order to find the invalid or corrupt files.
Method 3: Restore Invalid/Corrupted .zip Files with Stellar File Repair
Stellar File Repair is a great tool you can use to restore your corrupted or invalid .zip files. It is a toolkit used in resolving different types of file corruption challenges which are associated with Microsoft but it is mainly used to repair and restore corrupted files. Stellar File Repair supports the repairs of corrupt files on Word, Excel, PowerPoints, and of course Zip files. More so, it is very easy to use as anyone can make use of it to repair their corrupted files.
Use the following simple steps to restore your corrupted or damaged Zip files with Stellar File Repair:
Choose the location of the corrupt Zip file so you can search for it in drive
In the result section, you will find all the corrupt Zip files that need repair. Select “Repair” to begin the repair process.
Preview your repaired files
Choose any location you wish and save the repaired Zip files.
Part 3: Other Common Errors of 7-zip
Apart from the “header error”, there are other common errors associated with 7-zip when it comes to compressing or extracting Zip files; they include:
An Unexpected End of Data: This error occurs when you try to extract your files from the archive of 7-zip and it simply means that the file (the 7-zip format) wasn’t completely downloaded or it got corrupt in the process.
Invalid Compressed Folder: This error occurs as a result of data corruption which makes your .zip file unreadable. If this error occurs, you will receive an error message that says: “Windows cannot open the folder. The Compressed (zipped) Folder ‘C:\Path\to\file.zip’ is invalid”. Data corruption caused by some malware, slow downloads and error in the 7-zip tool itself can cause the “invalid error”.
Incomplete Extraction: Sometimes, you may not be able to extract a .zip file that has been downloaded from Windows Explorer and instead, you will see the error message in the image below:
Files are usually extracted into temp folder from .zip files but if this doesn’t happen, then there is a problem with your temp folder.
Inability for 7-zip to Open as an Archive: You may open your archived file for extraction, only to be confronted with the error message in the image below:
This implies that some header cannot be opened by 7-zip from either the start or the end of the archive.
Errors in Data for Archival Files: Another error occurs when you cannot perform the “Extract” or “Test” function to view your files even if you have opened the archive and have clearly seen the list of files inside. In this case, the error is as a result of damage or alteration to the data in the files themselves, known as Data Error or CRC Error.
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