Tips to open NUP file

Can't open the NUP file? You are not the only one. Thousands of users face similar problems every day. Below you will find tips on how to open NUP files as well as a list of programs that support NUP files.

NUP file extension

File Name Smart Security Update Format
File Developer ESET
File Category Misc Files

The NUP file is supported on 2 operating systems. Depending on your operating system, you may need different software to handle the NUP files. Below is a summary of the number of programs that support and open the NUP file on each system platform.

Operating systems
  • 2
  • 1
  • 0
  • 0
  • 0
  • 0

What is NUP file?

The NUP file has been categorized as Misc Files. The creator of this file is ESET. Additionally, the Misc Files category contains 6033 of other files. Smart Security Update Format appears on 2 operating systems as a functional file. Although it can be found with greater or lesser success on any operating system, it will only be useful on Mac OS, Windows. There are also 2 alternative programs to handle the NUP file. ESET Smart Security, ESET Nod32 Antivirus will apply when it is not possible to use ESET Cybersecurity.

How to open NUP file?

The most common problem when using Smart Security Update Format is that a specific NUP is not associated with the program. This causes the file NUP to open by system applications not designed for this purpose, or to display a message that there is no associated program. This can be quickly resolved by following the instructions below.

The first thing you should do is just "doubleclick" on the NUP file icon you want to open. If the operating system has an appropriate application to support it and there is also an association between the file and the program, the file should be opened.

Step 1. Install ESET Cybersecurity

An often overlooked issue is to make sure that ESET Cybersecurity is installed on the computer. This can be achieved by typing ESET Cybersecurity into the operating system search engine. In the absence of an appropriate program, its installation in the vast majority of cases will fix the problem. Below you will find a list of applications that support NUP files.

Step 2. Create association of ESET Cybersecurity with NUP files

If, despite the installed application, the NUP file does not start in the ESET Cybersecurity application, you must create a file association. The association can be created using the drop-down list available by right-clicking on the file and selecting Properties. The displayed window will contain information about the program that supports this type of file. Changes can be made using the "Change" button. It may happen that in the next window there will be no appropriate program - however, this can be corrected with the "Browse" option where you should manually indicate the program location. Checking the "Always use the selected program ..." box will permanently associate the NUP file with the ESET Cybersecurity program.

Step 3. Update ESET Cybersecurity to the latest version

If, despite the association of the ESET Cybersecurity program with the Smart Security Update Format file, the file still does not open, check the program version and possibly update it to the newest version.

Step 4. Check for the following problems with the NUP file

Of course, it may happen that despite the above steps, the file still does not work. This could be due to the file itself, the cleanest issues are:

The NUP file may be unusually small compared to the original file. This suggests truncating the NUP file contents when downloading or copying. The only repair option is to download the file again.
The most common cause here is computer viruses. Perform a virus scan using available and up-to-date anti-virus software. If this is not possible, you can use the online scanner. For the best results, we will scan the entire operating system, not just our NUP file. Sometimes virus-infected NUP files cannot be recovered, so make a backup in advance.
Older version of NUP file may not always be supported by the latest software version. On their websites, developers usually offer free solutions to such problems, e.g. in the form of a conversion program or an older version of the program.
There can be many reasons for the failure. The repair method must be adapted to the type of file and damage. Sometimes the program itself has options to repair the most popular NUP file corruption.
The program indicates that the file is encrypted or corrupted. The encrypted NUP files cannot be played on other computers than the one on which they were encrypted, they must be decrypted before using on another device.
Some operating systems do not allow file operations in certain locations, eg in system directories or directly on the system drive. These directories are write-protected to them and it's very hard to fix this problem. If possible, you can try to move the NUP file to another location.
This problem usually affects more complex files. Some file types can only be opened in one program at a time. Closing other programs should help. Sometimes it is necessary to wait a while before referencing the NUP file again. Some anti-virus or backup software may occupy the NUP file for a certain period of time. If nothing helps, please reset the device.