This article has been contributed by Amanda Zeng, a technology editor for MiniTool Solution Ltd.

Reasons behind the CRC Failed 7Zip Error

The 7Zip CRC failed error may occur while you receive some files over the Internet via email. When you are extracting files or folders via 7Zip, this error can happen as well. What causes CRC failed 7Zip error?

Various factors can trigger the CRC failed 7Zip error. Some common causes for the error are listed as follows.

Advertisement
  • Incomplete download of 7Zip files due to errors or interruptions occurring during the download process.
  • Transfer error because of hacks and Internet threats.
  • An outdated 7-Zip version.
  • Malfunction of 7Zip program.
  • Zip files infected by virus.
  • Insufficient disk space on the drive where you are trying to extract ZIP archives.
  • Bad sectors on the hard drive where 7Zip files are stored.

Way 1: Try the Latest 7Zip Version

As mentioned earlier, extracting files with an outdated 7Zip program can result in the CRC failed 7Zip error. When you receive this error, check if you are using the latest 7Zip version. If not, download it from its official website and then install it by following the on-screen instruction.

Generally speaking, the newest 7Zip version grants you access to new features, boosts stability, and offers changes related to the file size limit. Therefore, the 7Zip CRC failed error may disappear on the latest 7Zip.

Way 2: Try Other File Compression Programs

If 7Zip malfunctions due to some issues with itself and triggers the 7Zip CRC failed error, try using other file compression tools to unzip the compressed files. Then you won’t meet the CRC failed issue.

Tip: You may suffer from other issues like 7Zip cannot open file as archive while using 7Zip.

For instance, you can use programs like WinZip and WeCompress to unzip files. By doing so, the CRC failed 7Zip error may disappear.

Way 3: Run a Virus Scan

It is also common that viruses and malware lead to corruption. At this time, it is necessary to perform a virus scan. Nevertheless, ensure that you utilize a proper antivirus program for doing this operation.

If you don’t want to use third-party software, try using the Windows built-in utility – Windows Defender. This program can also help you run a virus scan on your PC. Here are detailed steps for you.

Step 1: Hold Windows + I key to open Settings, and then click on Update & Security in the main menu.

Step 2: Tap the Windows Defender > Open Windows Defender Security Center option in the Update & Security section.

Step 3: Click on Virus & threat protection in the Windows Defender Security Centre window.

Step 4: You can click on Quick scan in the prompted window to directly start the scanning process. If you have further requirements, tap Advanced scan, select a scan mode, and then click Scan now.

Way 4: Add More Disk Space

If CRC failed due to limited disk space, try increasing the disk space. You can obtain more space through four methods. A direct way is to upgrade to a larger hard drive. Operations like moving/resizing and extending partitions can also reach the purpose. A little complex way is to delete useless and space-consuming files or folders to free up space.

To get more disk space without file deletion and additional cost, moving/resizing/extending partitions is a good method. Then MiniTool Partition Wizard comes into use. The Move/Resize Partition and Extend Partition features of this program allow you to do the job within a few clicks.

Guide on Moving/Resizing Partitions

Step 1: Run MiniTool Partition Wizard to go to its main interface.

Step 2: Right-click on the target partition and click the Move/Resize option in the pop-up menu.

Step 3: Drag the handle to modify the location and size of the selected partition, and then click OK to confirm the changes.

Step 4: Tap the Apply button to execute the pending operation.

Guide on Extending Partitions

Step 1: After launching MiniTool Partition Wizard, highlight the partition to enlarge and click Extend Partition in the left pane.

Step 2: Select a place where you are going to take space from and drag the block to determine the amount of space to take. Then click on OK to move forward.

Step 3: Finally, click Apply to carry out the operation.

Way 5: Check Hard Drive for Bad Sectors

To check if bad sectors are to blame, you can run a hard drive test. Here are two methods to check hard drive for bad sectors. One method is to run CHKDSK command, while the other is to conduct surface test on MiniTool Partition Wizard.

Check Bad Sectors via CHKDSK

  • Type cmd in the search box.
  • Right-click on Command Prompt from search results and click Run as administrator.
  • In the prompted window, type chkdsk e: /r and hit Enter. Then the program will locate bad sectors on the drive and try to recover any readable information from them.

Tip: You can replace e with the actual drive letter of yours.

Check Bad Sectors via MiniTool Partition Wizard

  • Launch MiniTool Partition Wizard to enter its main interface.
  • Right-click on the target partition or drive and click Surface Test.
  • Click Start Now to start the scanning process. After a while, you can see the result. If there are any blocks in the scanning area marked with red colour, it indicates that there are bad sectors on the selected partition or drive.

If you are still bothered by the 7Zip CRC failed error, this post helps. Pick one method from the above to solve it now.

About the author

Amanda Zeng writes for MiniTool Solution Ltd. , She is a technology editor who has been writing tech articles since graduating from university.  

Her articles focus on solutions to various problems Windows users might encounter and she is excellent at disk partitioning.

Advertisement