File Name: libnspr4.dll
Bit: 32
Latest version:
Size: 0.19 MB
Language: U.S. English
Description: NSPR Library
Company: Mozilla Foundation

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Download libnspr4.dll file for Windows 7, Windows 8, Windows 10 and fix libnspr4.dll is missing or not found dll error. The latest version of libnspr4.dll file is v4.12.0.0 which is a 32 with a file size of approximately 0.19 MB. Mozilla Foundation is the developer of libnspr4.dll and the file belongs to NSPR Library.

What is libnspr4.dll ?

DLL stands for Dynamic Link Library. libnspr4.dll is a file that contains code, resources and data that other programs can use. Thus, Dlls provide a way to modularize applications so that their functionality can be updated and reused by other applications. Dll's also help to reduce application size and memory footprint since many applications can share the same code contained in a single Dll file such as libnspr4.dll.

How to fix libnspr4.dll error?

If you are here because your seeing libnspr4.dll errors in your Windows such as :

  • libnspr4.dll not found
  • libnspr4.dll is missing
  • Failed to load libnspr4.dll
  • or any other similar dll error

There are number of ways to fix libnspr4.dll errors. Below you will find 2 such ways:

How to install libnspr4.dll file?

Where do I put libnspr4.dll file? Download libnspr4.dll and copy it to the application’s installation folder.

Make sure to download libnspr4.dll 32-bit file for 32-bit Windows operating system and libnspr4.dll 64-bit file for 64-bit Windows operating system if they are available. Most new Windows systems would probably be a 64-bit one. You can check to see if your computer is running a 32-bit or a 64-bit version of Windows by doing:

Windows 10 and Windows 8.1
  • Select the Start button, then select Settings > System > About.
  • At the right, under Device specifications, see System type.
Windows 7
  • Select the Start button , right-click Computer, and then select Properties.
  • Under System, see the system type.

After you are done with above installation instructions, try restarting the application throwing libnspr4.dll is missing error.

If that doesn’t fix the error, copy the libnspr4.dll to the systems directory. This can vary between Windows OS versions. Check out the systems directory path for different Windows versions below:

  • C:\Windows\System (For Windows 95, 98, Me)
  • C:\WINNT\System32 (For Windows NT/2000)
  • C:\Windows\System32 (For Windows 7, Windows 8, Windows 10)

Restart your Windows and see if the error is fixed.

How to register libnspr4.dll file?

If the error persists, try to register the libnspr4.dll in Windows registry. This can be done by using the “REGSVR32” command prompt and giving the dll file libnspr4.dll.

  • Windows > Click Start > Run
  • REGSVR32 libnspr4.dll

Make sure you run the command as administrator from the Run Box.

Once you are done registering the libnspr4.dll in the Windows system’s registry, you should be good to go. Restart your Windows once again and libnspr4.dll missing error should be fix.

Clicking on 'Download libnspr4.dll' button below will take you to the download page where you will see list of libnspr4.dll versions with bit, file size and other details of of the file. It is recommended to download the latest version of libnspr4.dll to fix dll errors which is v4.12.0.0.

Download libnspr4.dll