Windows Error CRC-Error — Cyclic Redundancy Check

Windows CRC (Cyclic Redundancy Check) error means data on the storage device has been corrupted and cannot be verified. This guide covers everything you need to know about this topic, including common causes, step-by-step solutions, and answers to frequently asked questions.

Here are the key things to understand: Data error (cyclic redundancy check). CRC verifies data integrity during read/write. Failing CRC indicates data corruption on disk. Can affect internal drives, USB drives, and optical media. Understanding these fundamentals will help you diagnose and resolve this issue more effectively.

The most common reasons this occurs include: Bad sectors on hard drive or SSD. Damaged USB drive or SD card. Scratched CD/DVD disc. File system corruption. Identifying the root cause is the first step toward finding the right solution.

To resolve this, follow these recommended steps: Run chkdsk /f /r on the affected drive. Try copying files using Robocopy with /R:0 flag. Use data recovery software for important files. If drive has multiple CRC errors, replace it immediately. If these steps do not resolve the issue, consider consulting additional resources or a qualified professional.

This article is part of our Windows Error Codes collection on Error Codes Wiki. We provide comprehensive, up-to-date information to help you find solutions quickly.