How to Recover .NUP Files Lost During 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 .NUP file recovery guide for Windows, MacOS, Android and IOS in 2025.

How to Recover .NUP Files Lost During a System Crash
Data Recovery Tool

What is a .NUP file?

A NUP file is an update file used for updating ESET Smart Security, a personal firewall, antispam, antivirus, and antispyware program. It contains the update name, software version and build, category, date, file size, and the update module data. NUP files are also used by other ESET products, including Cybersecurity for Mac.

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

There are several common causes of ".NUP" file loss or failure:

  1. Accidental deletion: Users may accidentally delete ".NUP" files while organizing or cleaning up their computer's storage. This can happen when files are mistakenly selected and deleted without realizing their importance.
  2. Software or hardware issues: Issues with software or hardware can lead to ".NUP" file loss. For example, a sudden power outage or system crash during the saving or accessing of ".NUP" files can corrupt or delete them.
  3. Virus or malware attacks: Malicious software can infect and damage files on a computer, including ".NUP" files. Viruses or malware can delete, corrupt, or encrypt files, making them inaccessible.
  4. File system errors: File system errors can occur due to improper shutdowns, disk errors, or other issues. These errors can cause ".NUP" files to become corrupted or lost.
  5. Incompatible software or file format changes: If the software used to open or edit ".NUP" files is updated or changed, it may not be compatible with the previous file format. This can lead to file corruption or loss when attempting to open or convert the files.
  6. Human error: Users may accidentally overwrite or modify ".NUP" files, leading to data loss. This can happen when saving changes to a file without creating a backup or when mistakenly saving changes to the wrong file.
  7. Physical damage or hardware failure: Physical damage to storage devices or hardware failures can result in ".NUP" file loss. For example, a hard drive crash or damage to a USB drive can render the files inaccessible.

To prevent ".NUP" file loss or failure, it is recommended to regularly back up important files, use reliable antivirus software, avoid abrupt system shutdowns, and be cautious when handling and organizing files.

How to recover lost ".NUP" 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 ".NUP" 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 ".NUP" file is always to create it once more.

Use programs for recovering ".NUP" 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 ".NUP" 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.
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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 ".NUP" 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 ".NUP" extension?

Looking for how to open a stereo smart Security Update File image file file?

Programs that open ".NUP" files

Windows
ESET Internet Security ESET Internet Security
Mac
ESET Cybersecurity for Mac ESET Cybersecurity for Mac

Additional Information

  • File type: Smart Security Update File

  • File extension: .NUP

  • Developer: ESET

  • Category: Misc Files

  • Format: Binary

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Comments (1)

  • Hetman Software: Data Recovery
    Hetman Software: Data Recovery 18.12.2019 16:24 #
    Leave a comment if you have any questions about Recovering lost .NUP 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 a ".NUP backup" file and how does it differ from other backup file formats?

    A ".NUP backup" file is a backup file format used by Nuance PaperPort software. Nuance PaperPort is a document management software that allows users to scan, organize, and share documents and files.

    .NUP backup files are created by PaperPort when users choose to back up their PaperPort folders and files. These backup files contain all the necessary data and settings to restore the backed-up documents and files in PaperPort.

    The main difference between .NUP backup files and other backup file formats is the proprietary nature of the format. .NUP backup files can only be opened and restored using Nuance PaperPort software. This means that if you want to restore the backed-up files, you need to have PaperPort installed on your computer.

    In contrast, other backup file formats like .ZIP or .TAR are more widely supported and can be opened and restored using various software applications. These formats provide more flexibility in terms of restoring files, as they are not tied to a specific software application.

    Therefore, if you are using Nuance PaperPort and want to back up and restore your documents and files, .NUP backup files are a suitable choice. However, if you want a more universal backup format that can be opened and restored using different software, you may prefer other formats like .ZIP or .TAR.

  • How can I create a ".NUP backup" of my data and what tools or software can I use for this purpose?

    To create a ".NUP backup" of your data, you can use the following steps:

    1. Determine the data you want to back up: Identify the specific files, folders, or drives that you want to include in your backup.
    2. Choose a backup software: There are several tools and software available that can help you create a ".NUP backup." Some popular options include:
    • Nero BackItUp: Nero BackItUp is a comprehensive backup solution that supports ".NUP" file format. It provides various features like automatic backups, cloud storage integration, and scheduling options.

    • NovaBACKUP: NovaBACKUP is another software that allows you to create ".NUP backups." It offers features like file and folder backups, disk imaging, and disaster recovery options.

    • Acronis True Image: Acronis True Image is a powerful backup software that supports ".NUP" backups. It provides features like full system backups, incremental backups, and cloud storage integration.

    • Norton Ghost: Norton Ghost is a well-known backup software that can create ".NUP backups." It offers features like disk cloning, system image backups, and recovery options.

    • EaseUS Todo Backup: EaseUS Todo Backup is a user-friendly backup software that supports ".NUP" backups. It provides features like file, disk, and system backups, along with scheduling and recovery options.
    1. Install and configure the backup software: Once you have chosen a backup software, download and install it on your computer. Follow the setup instructions provided by the software to configure it according to your preferences.
    2. Select the backup destination: Choose where you want to store your ".NUP backup." This can be an external hard drive, network storage, or cloud storage. Make sure you have enough space to accommodate the backup.
    3. Configure the backup settings: Set up the backup software to include the files, folders, or drives you want to back up. You can usually select them through a user-friendly interface provided by the software. Additionally, configure any scheduling options or specific backup settings based on your requirements.
    4. Initiate the backup process: Once you have configured the backup settings, start the backup process. The software will begin creating a ".NUP backup" of your selected data and store it in the specified destination.

    Remember to periodically update and maintain your backups to ensure the safety of your data.

  • Are there any specific advantages or disadvantages of using ".NUP backup" files compared to other backup methods, and in what scenarios would it be recommended to use this format?

    The ".NUP backup" file format is specific to Notepad++, a popular text editor. It is used to back up the settings and preferences of Notepad++.

    Advantages of using ".NUP backup" files:

    1. Quick and easy restoration: The backup files contain all the settings and preferences of Notepad++, allowing for a quick and easy restoration of the application to a previous state.
    2. Portable: The backup files are self-contained and can be easily transferred or shared between different instances of Notepad++.
    3. Customizable: Notepad++ allows users to configure various settings and plugins. The backup files capture these customizations, making it convenient to replicate the same setup on different machines.

    Disadvantages of using ".NUP backup" files:

    1. Limited to Notepad++: ".NUP backup" files are specific to Notepad++ and cannot be used to back up other types of files or applications.
    2. Not a comprehensive backup solution: While ".NUP backup" files capture Notepad++ settings, they do not include the actual content of files being edited. Therefore, they should not be relied upon as a comprehensive backup solution for important documents.

    Recommended scenarios for using ".NUP backup" files:

    1. Migration to a new machine: When moving to a new computer, using ".NUP backup" files can help quickly restore Notepad++ with all the desired settings and configurations.
    2. Replication of settings: If you have multiple instances of Notepad++ across different machines and want to ensure consistent settings, ".NUP backup" files can be used to easily replicate the same setup.
    3. Version control: Developers who use Notepad++ can utilize ".NUP backup" files to store and manage different versions of their customized settings, allowing for easy switching between setups.

    It's important to note that ".NUP backup" files should not be considered a replacement for regular file backups. For important documents, it is recommended to have a comprehensive backup strategy that includes the content of the files being edited, rather than solely relying on the ".NUP backup" files.
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