but when i click on pendrive properties it show that data is.

Recuva is the best tool to recover your data back. my problem is that after plugging my usb pendrive when i open the pen drive to see the data i cannot see any thing on my pendrive. You can restore the deleted files from your PC even after it accidentally deleted from Recycle bin. Recuva is the best free software available among all to recover your damaged or formatted devices such as pen drive, USB storage, SD cards. Recover Data from Pen Drive using Freeware Applications

This Stellar Phoenix Windows data recovery software enables you for various types of recovery such as deleted partition, storage media recovery, RAID data recovery, deleted files, and folders. Stellar Phoenix Windows data recovery software for Pen drive is simple to use and you can easily trace all your lost data back to your Pen Drive. This software does not require any professional knowledge and you can easily recover your pen drive data back. Press Windows+R simultaneously, type cmd and hit Enter key to run Command Prompt as administrator. This software is simple to use and recommended if you are not familiar with cmd prompt. Open files that are invisible on USB flash drive 1. If still the problem occurs and you are unable to trace your pen drive data back then I recommend you to use professional software from Stellar data recovery. Recover Pen Drive data using Stellar data recovery software PS.: If Disk Management is unable to assign drive letter, you can try AOMEI Partition Assistant to perform this task.

After a successfully done with above steps, this command will restore your pen drive to the previous version. After assigning drive letter to USB flash drive successfully, you can see and open it within File Explorer.

Unable to view files in pen drive