Nspr4.dll is the driver file for Netscape Portable Runtime, a group of files which support non-GUI operating system resources like shared libraries, threads and thread synchronization as well as shared library linking, running independent from any platform. Nspr4.dll is one of the modules of Netscape Communications that maps the Java system layer to be ported to various platforms. It aims to pattern its associated operating system similar to Mozilla. Its five independent publishers are: 1) Mozilla Foundation – making use of the DLL as an extension to Firefox 3 Beta application. 2) AOL - uses the version 4.4.1.0 for its AOL Instant Messenger 5. 3) Sun Microsystems Incorporated – the third publisher of the version 4 of the nspr4.dll library. 4) Participatory Culture Foundation – the 4.6.1.0 version release of the nspr4.dll. 5) Netscape Communications Corporation – the 4.5.0.0 version library module. A reported problem, however, has afflicted nspr4.dll which is the unexplained removal by Spybot, affecting Visual Studio 2003, including the executable ctfmon.exe file.

Most non-system processes that are running can be stopped because they are not involved in running your operating system. nspr4.dll. is used by Netscape Portable Runtime, If you shut down nspr4.dll, it will likely start again at a later time either after you restart your computer or after an application start. To stop nspr4.dll, permanently you need to uninstall the application that runs this process which in this case is Netscape Portable Runtime, from your system.

After uninstalling applications it is a good idea to scan you Windows registry for any left over traces of applications. Registry Reviver by ReviverSoft is a great tool for doing this.

The ReviverSoft experts have not yet reviewed nspr4.dll

A process usually a part of an installed application such as Netscape Portable Runtime, or your operating system that is responsible for running in functions of that application. Some application require that they have processes running all the time so they can do things such as check for updates or notify you when you get an instant message. Some poorly written applications have many processes that run that may not be required and take up valuable processing power within your computer.

We have not received any complaint about this process having higher than normal impact on PC performance. If you have had bad experiences with it please let us know in a comment below and we will investigate it further.

The first thing you should do if nspr4.dll. is causing errors on your computer is to run a Windows registry scan with Registry Reviver If you are still seeing errors after this you should uninstall the program that nspr4.dll, belongs to, in this case Netscape Portable Runtime