USB devices are excellent tech accessories, mainly used to store and transfer files. They are fast, and you can write anything you want at any time. The best thing about these USB devices is that you can carry their small, portable storage anywhere. However, these electronic devices tend to corrupt, misbehave, and stop working as intended. Until now, we have shared a few of the best tutorials on USB, like how to recover unallocated space, fix USB device not recognized errors, etc. Today, we are going to discuss another USB error that displays ‘Windows was unable to format Pen Drive'. How To Fix Windows Was Unable To Complete The Format Error The ‘Windows was unable to format PenDrive’ error mainly occurs when users try to format the pen drive. This is a standard error, and almost all Windows users might have faced it already. So, here in this article, we will share some of the best methods to fix the ‘Windows was unable to format the pen drive’ error message from your computer. 1.