Which are you posting this on? (Discord, a forum, Reddit?)
If the archive asks for a password, check the source page where you found the link. To help me make this post even better, could you tell me: Download Totally Grippin5345435 rar
Use the latest version of WinRAR to avoid "Archive Corrupt" errors. Which are you posting this on
What is the of the file? (Software, music, game mod?) Is there a password required for the .rar? Download Totally Grippin5345435 rar
Always run a virus scan after downloading files from the internet.