A CRC check error means that the file data is corrupted. See if you have downloaded the WINRAR compressed package. If you can try to run WinRAR, please select the damaged file from the address list and click the "Repair" button on the toolbar. At this time, WinRAR will pop up a dialog box asking the storage location of the repair file. The default storage location is the folder where the damaged file is currently located. After confirmation, WinRAR will start the repair work. After successful repair, a new file name "_reconst.rar" will be generated, which can be used normally after changing back to the original file name. Then, just download a damaged compressed package. Thank you.