While searching for an answer to the question - How to open the NAB file? - you probably found websites, which offer software that was able to open any file extension. Do not be fooled, there is no one program that will allow you to work with any file extension, including the NAB file. Each program contains a different type of data and you need specialized software to properly work with the NAB file. Here is a list of programs that are designed to work with the NAB file - remember, these applications are able to open at most a few file extensions, they are designed to work with a specific data type.
| File type | Netscape Communicator Addressbook |
| Developer | AOL Inc. |
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If after installing the program from a list, you still cannot open a file with the NAB extension, the reason may be that the file is damaged. The solution may be to find a new copy of the NAB file you want to open
In this case, the easiest way is to use the tool built into the operating system for association of the NAB file with applications to support it. Double click on the file you cannot open - the operating system will display a list of programs that are likely to work with your NAB file. Choose one of them, or select the location on a disk where you installed one of the applications from our list. Windows should then open the NAB file using the program installed earlier.
Entries containing links of the NAB file extensions with applications is located in the HKEY_CLASSES_ROOT. If you do not know how to get to the Windows Registry, or how to make changes in it, ask a specialist for help. Lack of knowledge on the subject may cause irreversible changes on your computer.
There may be a situation when a computer virus passes itself off as the NAB file. In this case, such a file will definitely not be opened. Download a good antivirus program and scan the NAB file mentioned. If the antivirus application detects malicious data, it may signify that the NAB file is infected.
| NAL | System Management Server Network Abstraction Layer |
| NAM | DMAP Spreadsheet Format |
| NARC | Nintendo DS Archive Format |
| NAV | Counter-Strike Source CBot Navigation Mesh Format |
| NAF | TRAKTOR Service |
| NARRATIVE | Mariner Software Narrator Audio Document |
| NAS | Nasal Script |
| NAZ | Total Overdose Game Data Format |
| NAPR | NameCleaner Preference |
| NAB | Netscape Communicator Addressbook |
