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Fix Windows was Unable to Complete the Format Error

Updated on Dec 05, 2018 by Tracy King to Partition Master

Summary:
Windows was unable to complete the format error may come up when storage devices or hard drive partition contain bad sectors, corrupted file system or infected by virus. Two methods - Disk Management and EaseUS Partition Master are available here to resolve this issue with ease.

Windows was unable to complete the format error

"Yesterday, Windows asked me to format my USB flash drive when I connected it to the computer. But I just got an error message 'Windows was unable to complete the format' when I tried to reformat it to FAT32. How can I fix this problem?"
"I have a problem with my micro SD card. I can't format it. I receive an error 'Windows was unable to complete the format', what can I do?"

Windows was unable to complete the format error

Formatting a Micro SD card, USB flash drive, pen drive, hard drive or SSD is a quite easy process and it’s not strange to most of us.

But sometimes you might face the 'Windows was unable to complete the format' error and another similar error 'the format did not complete successfully' caused by virus infection, bad sectors, storage device damage, disk write protection, etc. In this article, we will show you, step by step, how to fix 'Windows was unable to complete the format' error in two popular ways. 

Fix Windows was unable to complete the format error with Windows Disk Management

When you get 'Windows was unable to complete the format' error message, you can first try to fix this problem with the Windows Disk Management tool. All you need to do is to follow this path: 

  1. Step 1. Right-click the "My Computer" icon on the desktop and hit the "Manage" option.
  2. Step 2. Click on "Disk management" to open Windows Disk Management. 
  3. Step 3. Select the Micro SD card, USB or flash drive that you need to format, right-click and hit "Format". If there are any partitions on the drive, you should delete them all at first. 

Fix Windows was unable to complete the format error with EaseUS partition tool

If the first method does not work as expected, you can fix 'Windows was unable to complete the format' error with a third-party software - EaseUS partition tool. It is an easy-to-use and powerful application that can easily deal with any issue that you might experience when trying to format a USB drive. Here is the detailed guide. 

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 Windows 10 is supported

 

Step 1: Run EaseUS Partition Master, right-click the hard drive partition you intend to format and choose "Format".

Format Hard Drive Partition - Step 1

Step 2: In the new window, set the Partition label, File system (NTFS/FAT32/EXT2/EXT3), and Cluster size for the partition to be formatted, then click "OK".

Format Hard Drive Partition - Step 2

Step 3: Then you will see a warning window, click "OK" in it to continue.

Format Hard Drive Partition - Step 3

Step 4: Click the "Execute Operation" button in the top-left corner to review the changes, then click "Apply" to start formatting the partition on your hard drive.

Format Hard Drive Partition - Step 4