How to Fix Windows Was Unable to Complete the Format?

If it does not get Formatted using any other method, then I can assure you that it cannot be formatted or repaired. Why? Because all the NAND devices come with a certain limit of READ and WRITE Function which means you can Format NAND devices up to a certain limit for example 10K Times.
If that limit is reached, then all the charges inside the SD Card or Pendrive break which results in READ ONLY mode of your Pendrive. So make sure to buy branded Storage Devices as they come with higher limits of READ and WRITE FUNCTION.

When Windows fails to complete the format SD card, you have three options: use partition management software, built-in Windows Disk Management, or Command Prompt.

When Windows Explorer cannot format a memory card, use partition management software, a specialized disk formatting tool:
Step 1: Launch Partition Master, right-click the memory card partition to be formatted, and select “Format.”
Step 2: In the new window, configure the Partition label, File system (NTFS/FAT32/EXT2/EXT3), and Cluster size for the to-be-formatted partition, then click “OK.”
Step 3: A warning window will appear; click “OK” to proceed.
Step 4: In the top-left corner, click the “Execute Operation” button to review the changes, then click “Apply” to begin formatting the partition on your SD card or other memory cards.

Step 1: Insert your SD card into a card reader and connect it to your computer.
Step 2: Navigate to “My Computer,” then to “Devices with Removable Storage.” Right-click the SD card and select “Format.”
Step 3. Select the “Quick” option from the drop-down bar next to “Format Type,” which allows you to format the card without removing any of the files on it. Select the “Full” option to erase all of the files on the SD card while formatting.
Step 4: Click “OK” to begin the SD card formatting process.

What is preventing you from completing the format? How do you fix the error message: Windows was unable to complete the format SD card when you try to format your SD card or USB flash drive on your computer? The format can be completed with the help of the Windows Disk Management tool.
Step 1: Select Disk Management from the Start menu.
Step 2: Select the drive where Windows was unable to complete the format error message appears. Then, right-click it and select “Format.”

The first step is to determine whether Windows can detect the hard drive.
If so, use EaseUS Partition Master to directly format your hard drive using the steps outlined in Method 1 on this page.
If not, or if your hard drive displays as unknown or unallocated, create a new partition and reformat the drive.

As described on this page, you cannot directly format your hard drive if it becomes locked, damaged, contains file system errors, bad sectors, or is infected with a virus.
You can try one of three solutions to this problem:
1) Use a password or third-party software to unlock the hard drive;
2) Remove viruses and malware from the hard drive.
3). Format the hard drive with EaseUS Partition Master, Diskpart, or Disk Management.
For more information, use the methods provided on this page as a guide.

If you are unable to format a flash drive, try the steps below:
Step 1: Connect the flash drive to the PC and, if necessary, unlock the USB.
Step 2: Use virus removal software to remove any hidden viruses or malware.
Step 3: Launch EaseUS Partition Master or Windows Disk Management.
Step 4: Select “Format” from the menu that appears when you right-click the USB flash drive. Set the drive’s file system to a new one.
Step 5: Reset the file system on the flash drive and confirm by clicking “OK.”
Following that, you can reuse the flash drive to transfer data and save files.

You can use an SD card without formatting by performing one of the following procedures:

1) Try General Troubleshooting first.
2) To repair an unformatted card, run CHKDSK.
3) Connect to your PC using a card reader.