How to Restore .NDA Files After a System Crash

Have files been deleted due to a user’s error or software error? Have you formatted a disk by accident and need to know how to recover the files? Read our .NDA file recovery guide for Windows, MacOS, Android and IOS in 2025.

How to Restore .NDA Files After a System Crash
Data Recovery Tool

What is a .NDA file?

Backup file created by BackItUp (formerly BackItUp and Burn), a program that allows users to compress and back up files; contains encrypted backup data of your files, folders, applications, or drives.

What Are Common Causes of ".NDA" Files Lost or Failure?

There can be several common causes of ".NDA" (Non-Disclosure Agreement) files lost or failure:

  1. Accidental deletion: Users may accidentally delete the ".NDA" file while organizing or cleaning up their files, leading to its loss.
  2. File corruption: If the ".NDA" file gets corrupted due to a system error, software malfunction, or improper file transfer, it may become unreadable or fail to open.
  3. Hardware failure: If the storage device containing the ".NDA" file, such as a hard drive or USB drive, fails or becomes damaged, the file can be lost.
  4. Virus or malware infection: If the system or storage device gets infected by a virus or malware, it can corrupt or delete files, including the ".NDA" file.
  5. Software compatibility issues: If the software used to create or open the ".NDA" file is outdated or incompatible with the operating system, it may cause failure or loss of the file.
  6. Human error: Mistakes made by users, such as accidental overwriting, improper saving, or incorrect file format conversions, can result in the loss or failure of the ".NDA" file.
  7. Unauthorized access or theft: If someone gains unauthorized access to the system or steals the device containing the ".NDA" file, it can lead to its loss or compromise.

To avoid such issues, it is recommended to regularly back up important files, use reliable antivirus software, keep software and systems up to date, and follow proper file management practices.

How to recover lost ".NDA" files?

Sometimes while working with a computer, laptop or other stationary or mobile devices, you may encounter various bugs, freezes, hardware or software failures, even in spite of regular updates and junk cleaning. As a result, an important ".NDA" file may be deleted.

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🧺 How to Recover Files and Folders After Sending Them to the Recycle Bin and Deleting? (Windows 11)

🧺 How to Recover Files and Folders After Sending Them to the Recycle Bin and Deleting? (Windows 11)

By no means should you think that the only way to recover a ".NDA" file is always to create it once more.

Use programs for recovering ".NDA" files if a file was lost after accidental or deliberate deleting, formatting the memory card or the internal storage, cleaning the storage device, after a virus attack or a system failure.

Programs to recover ".NDA" files

Looking for a way to get files back? In cases when files were deleted and they cannot be restored by using standard operating system tools, use Hetman Partition Recovery.

Partition Recovery™ 5.0
The tool recovers data from any devices, regardless of the cause of data loss.
Download

Follow the directions below:

  1. Download Hetman Partition Recovery, install and start the program.

  2. The program will automatically scan the computer and display all hard disks and removable drives connected to it, as well as physical and local disks.

    File Recovery Software

  3. Double-click on the disk from which you need to recover ".NDA" files, and select analysis type.

    Hetman Partition Recovery - Analysis Type

  4. When the scanning is over, you will be shown the files for recovery.

    Hetman Partition Recovery - Files that Can be Restored

  5. To find a file you need, use the program’s interface to open the folder it was deleted from, or go to the folder "Content-Aware Analysis" and select the required file type.

    Hetman Partition Recovery - Deep Scan

  6. Select the files you have been looking for and click "Recovery".

    File Recovery Software - Files List for Recovery

  7. Choose one of the methods for saving the files and recover them.

    Saving recovered files in Hetman Partition Recovery

How to open file with ".NDA" extension?

Looking for how to open a stereo nero Backup File image file file?

Programs that open ".NDA" files

Windows
Nero BackItUp 2019 Nero BackItUp 2019

Additional Information

  • File type: Nero Backup File

  • File extension: .NDA

  • Developer: Nero

  • Category: Backup Files

  • Format: N/A

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Comments (1)

  • Hetman Software: Data Recovery
    Hetman Software: Data Recovery 18.12.2019 12:11 #
    Leave a comment if you have any questions about Recovering lost .NDA files after deleting, cleaning or formatting!
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Vladimir Artiukh

Author: Vladimir Artiukh, Technical Writer

Vladimir Artiukh is a technical writer for Hetman Software, as well as the voice and face of their English-speaking YouTube channel, Hetman Software: Data Recovery for Windows. He handles tutorials, how-tos, and detailed reviews on how the company’s tools work with all kinds of data storage devices.

Oleg Afonin

Editor: Oleg Afonin, Technical Writer

Oleg Afonin is an expert in mobile forensics, data recovery and computer systems. He often attends large data security conferences, and writes several blogs for such resources as xaker.ru, Elcomsoft and Habr. In addition to his online activities, Oleg’s articles are also published in professional magazines. Also, Oleg Afonin is the co-author of a well-known book, Mobile Forensics - Advanced Investigative Strategies.

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Questions and answers

  • What is .NDA Recovery and how does it work?

    .NDA Recovery is a software tool designed to recover or remove passwords from encrypted .NDA (Nero Digital Audio) files.

    Nero Digital Audio is a proprietary audio format developed by Nero AG. It is commonly used for compressing and storing audio files. However, Nero Digital Audio files can be password protected to prevent unauthorized access.

    If you forget the password for your .NDA file, .NDA Recovery can help you recover it using various methods. It employs advanced algorithms and techniques to crack the password and gain access to the encrypted content. The recovery process may involve trying different combinations of characters, using dictionary attacks, or utilizing brute-force methods to guess the password.

    It is important to note that using .NDA Recovery to recover passwords from encrypted files without proper authorization is illegal and unethical. It should only be used for legitimate purposes, such as recovering passwords from your own files when you have forgotten them.

  • What are the common reasons for needing to recover .NDA files?

    There seems to be a misunderstanding in your question. ".NDA" is not a common file format, and it is not typically associated with data recovery.

    However, if you meant ".ND" files, they are associated with certain software applications, such as QuickBooks. In this case, some common reasons for needing to recover .ND files may include:

    1. File corruption: The .ND file may become corrupted due to various reasons, such as improper shutdown, hardware failure, or software issues. In such cases, recovering the .ND file may be necessary to restore the functionality of the associated software.
    2. Accidental deletion: If the .ND file is accidentally deleted, it may disrupt the proper functioning of the associated software. Recovering the deleted .ND file can help restore the software's functionality.
    3. System crash: A system crash or failure can sometimes lead to the loss or corruption of .ND files. Recovering these files can help restore the software's configuration and settings.
    4. Data migration: During the process of migrating data or transferring software to a new system, .ND files may get lost or corrupted. Recovering these files can help ensure a smooth transition and proper functioning of the software.

    It is important to note that the specific reasons for needing to recover .ND files may vary depending on the software application they are associated with.

  • Are there any specific tools or software available for .NDA Recovery?

    There are no specific tools or software available for .NDA (Non-Disclosure Agreement) recovery. NDA files are typically in a proprietary format specific to the software used to create them, and they are not meant to be easily recoverable or editable. If you have lost or deleted an NDA file, your best option is to contact the party who provided the NDA and request a new copy.
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