WinRAR is a software application that extracts compressed archive files. A cyclic redundancy check error, or CRC error, results from one or more damaged files within an archive. When you attempt to extract a partially corrupted archive, WinRAR may display a CRC error and prevent you from accessing any of the files in that archive. The software includes a built-in feature that allows you to bypass this error. A CRC error may also appear when you attempt to install the WinRAR software after an incomplete download. If this occurs, redownload WinRAR and attempt the install with a complete download of the setup program.
Visit win-rar.com/download.html and click the download link at the top of the page. Click the "Continue to download WinRAR" link on the next page. Save the file to your desktop or another easily accessible location.
Double-click the "wrar401.exe" icon to launch the installer.
Follow the onscreen instructions to complete the installation. If you encounter a CRC error during this step, your download was incomplete. Cancel the installation and begin again from Step 1.
Double-click the WinRAR icon on your desktop to launch the application and confirm that it installed correctly.
Launch the WinRAR application and click the "File" menu. Select "Open Archive."
Browse your hard drive to find the archive you wish to open. Click it once and click the "Open" button.
Click the "Extract to" icon at the top of the WinRAR window.
Click the check box next to "Keep Broken Files" in the "Miscellaneous" section.
Browse to the location on your computer where you wish to extract the archive to on the right side of the window. Click "OK" to begin the extraction.
Ignore any errors that occur during the extraction process. When a CRC error window pops up, close it and continue your extraction. WinRAR will allow you to continue and extract the files in the archive that are not corrupted.
Usually, you will not be able to extract the parts of the archive that contain broken files.