Older versions of extraction software can sometimes fail with modern encryption. Ensure you are using the latest version of WinRAR. Why does P30Download use a password?
Are you trying to extract a specific or a large game that's giving you a "CRC failed" error? p30download password
Many software cracks or patches are flagged as "False Positives" by Chrome or Windows Defender. Encryption masks the file signature so it isn't automatically deleted by your browser during the download. Older versions of extraction software can sometimes fail