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Copy Speed 0 Bytes: How to Fix File Transfer Speed Drops to Zero

Posted on Mar 09, 2018 by Brithny to Partition Manager

This article deals in great detail with the problem of file transfer either slowing down or coming to a complete zero in Windows 10. Simply follow this article to fix file transfer speed drops to zero or copy speed 0 bytes issue right now.

File Transfer Speed Drops to Zero

"I have a mini PC with Windows 10 64-bit preinstalled. When I set it up this weekend and copy files to my USB drive, the speed is abysmal. It fluctuates wildly during copy or move. Rarely more than 10mb/s, and every few seconds it drops to zero, where it hangs for minutes. Transferring a folder with lots of files can take hours, with most of the time wasted. Can someone help me?"

How to Fix "Copy Speed 0 Bytes" issue

Windows 10 has proved to be one of the most popular and stable operating systems to have seen the light of the day. Despite its extreme popularity, it also gets bogged down by its fair share of errors. One of the most persistent errors is the file transfer to a drive, a USB, or over the network either totally stops or suffers from extreme lags while being processed. 

On this page, we will provide workable methods to solve the problem. Let’s check them out right away.

Method One. Disable Remote Differential Compression

The Remote Differential Compression task compresses data before it is sent over the network. This takes a considerable amount of time and can lead to congestion. Speed up the file copying, moving or deleting process by disabling this process.

  • Open Control Panel and select Programs and Features.
  • Now select Turn Windows features on or off from the pane on the left-hand side.
  • Search for Remote Differential Compression API Support and uncheck the box next to it.
  • Click OK to save the changes.

Method Two. Update All Drivers to Fix "Copy Speed 0 Bytes" Issue

Windows prefers to install its own drivers for computer peripherals, whereas using other drivers can result in decreased file transfer performance sometimes. Therefore, it is possible that updating the driver can fix the problem under discussion.

  • Download latest drivers for BIOS, Chipset, HDD and IDE Controllers.
  • Open Device Manager.
  • Right-click on the device you want to update the driver for and click Update driver.

Method Three. Run Disk Defragmenter on Both Drives

  • Click the Windows button and search for Disk Defragmenter.
  • Select the concerned drive and then click Optimize.

Method Four. Format the Drive to Which You Are Copying Data in NTFS

Sometimes the only reason a drive's copy speed showing 0 bytes is that it isn’t formatted properly. So, you can format your USB drives or external hard drives in a proper way. 

EaseUS partition software is a popular disk partition management tool which is available for all disk or partition related jobs such as format disk partition, extend system partition, settle low disk space problem, convert MBR to GPT without data loss and vice versa. You can try it whenever you want to format your device in a proper way.

Before you format your USB drive or other devices to fix "file transfer speed 0 bytes" issue, you'd better backup your data to avoid data loss.

Step 1. Connect your USB flash drive or pen drive to your PC, and launch EaseUS partition tool. Select and right-click the device you want to format and choose "Format partition" by right-clicking the mouse.

open easeus's partition tool and choose format partition to fix the copy speed 0 bytes issue

Step 2. Configure the label you want in the Partition Label box.

choose the partition to format

Step 3. Select the file system type to be created from the "File System" drop-down list. (FAT/FAT32, NTFS, EXT2/EXT3).

If the USB drive is larger than 4GB, you can only choose FAT32, NTFS or EXT2/EXT3, and if the partition is smaller than 4GB, you can choose FAT, FAT32, NTFS or EXT2/EXT3.

choose the NTFS system

Step 4. Choose the Cluster Size (512 bytes, 1, 2, 4...64KB) from the drop-down list and click "OK" to apply the format operation.

select the cluster size

Note: Smaller cluster size makes less wasting of disk space. The smaller cluster size is, the bigger file allocation table (FAT) will be. The bigger the FAT is, the slower the operating system works with the disk.

Step 5. Click "Apply" to format the USB flash drive or pen drive with slow copy or transfer speed.