Error 0x8007045d: What It Is and How to Fix It?

Error 0x8007045d is a Windows I/O (Input/Output) device error that shows up when your system cannot read or write data to a storage device. You will usually see this error when trying to copy files to or from an external hard drive, USB flash drive, SD card, or even during a Windows update or backup. The full message typically says "The request could not be performed because of an I/O device error."

This error is not a virus or a software bug — it almost always points to a problem with the storage hardware, cable, or driver. Here is how to fix it.

Check the USB Cable and Port

A loose or damaged USB cable is the most common cause of error 0x8007045d. Try these steps first:

• Unplug the storage device and plug it into a different USB port on your computer
• Try a different USB cable if you are using an external hard drive
• Avoid using USB hubs — connect the drive directly to your computer
• If using a USB 3.0 device, try plugging it into a USB 2.0 port to rule out compatibility issues

Run CHKDSK on the Drive

The drive may have bad sectors or file system corruption that is causing the read/write error. Running CHKDSK can detect and repair these issues:

1. Open Command Prompt as Administrator (right-click Start, select Command Prompt Admin)
2. Type chkdsk X: /f /r (replace X with the drive letter of the problematic drive)
3. Press Enter and let the scan complete — this can take 30 minutes to several hours depending on drive size
4. Restart your computer after the scan finishes

The /f flag fixes file system errors and /r locates bad sectors and recovers readable data from them.

Update or Reinstall the Drive Controller

An outdated or corrupted storage controller driver can cause I/O errors. To fix this:

1. Press Windows key + X and select Device Manager
2. Expand IDE ATA/ATAPI controllers or Universal Serial Bus controllers
3. Right-click your storage controller and select Update Driver
4. Choose Search automatically for drivers
5. If updating does not help, right-click the controller again and select Uninstall Device, then restart your computer — Windows will reinstall the driver automatically

Try Copying Smaller Chunks of Data

If you are getting error 0x8007045d while copying a large amount of files, the drive may struggle with sustained large transfers. Try copying files in smaller batches — 5 to 10 GB at a time instead of everything at once. This reduces the strain on the drive and can help identify which specific file or folder is triggering the error.

Disable Hardware Encryption on the Drive

Some external drives have built-in hardware encryption that can conflict with Windows and cause I/O errors. If your drive came with encryption software, try disabling it through the drive manufacturer utility. WD, Seagate, and Samsung drives often have companion apps that let you toggle encryption on or off.

Check Drive Health

If the error keeps coming back, the drive itself may be failing. Download a free tool like CrystalDiskInfo and check the SMART status of your drive. If the health status shows Caution or Bad, the drive has physical damage and you should back up your data immediately before the drive fails completely. Replace the drive with a new one.

Fix During Windows Update or Backup

If error 0x8007045d appears during a Windows update, it usually means the system drive has bad sectors or the update files got corrupted during download. Run sfc /scannow in an admin Command Prompt to repair system files, then run DISM /Online /Cleanup-Image /RestoreHealth to fix the Windows component store. After both commands complete, try the Windows update again.