Should I block it?

No, this file is 100% safe to run.

VersionsAdditional versions

4.9.5 Beta 0.75%
4.9.4 Beta 0.75%
4.9.4 Beta 0.75%
4.9.4 Beta 0.75%
4.9.4 0.75%
4.9.4 1.50%
4.9.4 6.02%
4.9.4 0.75%
4.9.4 21.80%
4.9.4 0.75%
4.9.4 1.50%
4.9.4 0.75%
4.9.2 10.53%
4.9.2 1.50%
4.9.2 36.84%
4.9.2 1.50%
4.9.2 0.75%
4.9.1 1.50%
4.9 Beta 2.26%
4.9 Beta 0.75%
4.9 0.75%
4.9 0.75%
4.9 1.50%
4.9 3.01%
4.9 1.50%

Relationships

PE structurePE file structure
Show functions
Import table
advapi32.dll
OpenProcessToken, SetSecurityDescriptorGroup, GetTokenInformation, CopySid, InitializeSecurityDescriptor, SetSecurityDescriptorDacl, InitializeAcl, AllocateAndInitializeSid, SetSecurityDescriptorOwner, AddAccessAllowedAce, FreeSid, GetLengthSid
kernel32.dll
GetSystemTimeAsFileTime, GetCurrentProcessId, GetCurrentThreadId, IsDebuggerPresent, SetUnhandledExceptionFilter, UnhandledExceptionFilter, InterlockedCompareExchange, DecodePointer, EncodePointer, OpenFileMappingA, GetTickCount, QueryPerformanceCounter, OpenSemaphoreA, LoadLibraryW, LeaveCriticalSection, DeleteFileA, GetFileInformationByHandle, FindNextFileA, MoveFileA, FindClose, RemoveDirectoryA, SetLastError, GetHandleInformation, FindFirstFileA, CreateDirectoryA, FlushFileBuffers, ReadFile, GetDriveTypeA, WriteFile, LockFile, UnlockFile, SetHandleInformation, SetFilePointer, CreateFileA, GetFullPathNameA, ResumeThread, SuspendThread, TlsFree, TlsAlloc, DuplicateHandle, SetThreadPriority, GetCurrentThread, GetThreadContext, ReleaseSemaphore, CreateSemaphoreA, GetCurrentProcess, GetSystemTime, GetVersionExA, CreateFileMappingA, TerminateProcess, CreateProcessA, GetExitCodeProcess, GetEnvironmentStrings, FormatMessageA, FreeEnvironmentStringsA, WaitForSingleObject, SystemTimeToFileTime, UnmapViewOfFile, MapViewOfFile, TlsSetValue, DeleteCriticalSection, InitializeCriticalSection, TlsGetValue, Sleep, GetStdHandle, CloseHandle, CreatePipe, GlobalMemoryStatus, InterlockedExchange, GetSystemInfo, GetModuleHandleA, GetProcAddress, GetLastError, MultiByteToWideChar, GetModuleFileNameW, GetModuleHandleW, LoadLibraryExW, FreeLibrary, WideCharToMultiByte, DebugBreak, OutputDebugStringA, EnterCriticalSection, IsProcessorFeaturePresent, RaiseException
mozglue.dll
calloc, strdup, realloc, frex, free, malloc
mozutils.dll
strdup, calloc, malloc, realloc, frex, free
msvcr100.dll
DllMain
msvcr80.dll
DllMain
winmm.dll
timeGetTime
Export table
_PR_AddSleepQ
_PR_CreateThread
_PR_DelSleepQ
_PR_GetPrimordialCPU
_PR_MD_FREE_CV
_PR_MD_NEW_CV
_PR_MD_NOTIFY_CV
_PR_MD_NOTIFYALL_CV
_PR_MD_UNLOCK
_PR_MD_WAIT_CV
_PR_NativeCreateThread
_pr_push_ipv6toipv4_layer
_pr_test_ipv6_socket
GetExecutionEnvironment
libVersionPoint
LL_MaxInt
LL_MaxUint
LL_MinInt
LL_Zero
PR_Abort
PR_Accept
PR_AcceptRead
PR_Access
PR_AddToCounter
PR_AddWaitFileDesc
PR_AllocFileDesc
PR_Assert
PR_AssertCurrentThreadInMonitor
PR_AssertCurrentThreadOwnsLock
PR_AtomicAdd
PR_AtomicDecrement
PR_AtomicIncrement
PR_AtomicSet
PR_AttachSharedMemory
PR_AttachThread
PR_AttachThreadGCAble
PR_Available
PR_Available64
PR_Bind
PR_BlockClockInterrupts
PR_BlockInterrupt
PR_Calloc
PR_CallOnce
PR_CallOnceWithArg
PR_CancelJob
PR_CancelWaitFileDesc
PR_CancelWaitGroup
PR_CeilingLog2
PR_CEnterMonitor
PR_CExitMonitor
PR_ChangeFileDescNativeHandle
PR_Cleanup
PR_ClearInterrupt
PR_ClearThreadGCAble
PR_Close
PR_CloseDir
PR_CloseFileMap
PR_CloseSemaphore
PR_CloseSharedMemory
PR_CNotify
PR_CNotifyAll
PR_cnvtf
PR_Connect
PR_ConnectContinue
PR_ConvertIPv4AddrToIPv6
PR_CreateAlarm
PR_CreateCounter
PR_CreateFileMap
PR_CreateIOLayer
PR_CreateIOLayerStub
PR_CreateMWaitEnumerator
PR_CreateOrderedLock
PR_CreatePipe
PR_CreateProcess
PR_CreateProcessDetached
PR_CreateSocketPollFd
PR_CreateStack
PR_CreateThread
PR_CreateThreadGCAble
PR_CreateThreadPool
PR_CreateTrace
PR_CreateWaitGroup
PR_CSetOnMonitorRecycle
PR_CWait
PR_DecrementCounter
PR_Delete
PR_DeleteSemaphore
PR_DeleteSharedMemory
PR_DestroyAlarm
PR_DestroyCondVar
PR_DestroyCounter
PR_DestroyLock
PR_DestroyMonitor
PR_DestroyMWaitEnumerator
PR_DestroyOrderedLock
PR_DestroyPollableEvent
PR_DestroyProcessAttr
PR_DestroyRWLock
PR_DestroySem
PR_DestroySocketPollFd
PR_DestroyStack
PR_DestroyTrace
PR_DestroyWaitGroup
PR_DetachProcess
PR_DetachSharedMemory
PR_DetachThread
PR_DisableClockInterrupts
PR_dtoa
PR_EmulateAcceptRead
PR_EmulateSendFile
PR_EnableClockInterrupts
PR_EnterMonitor
PR_EnumerateAddrInfo
PR_EnumerateHostEnt
PR_EnumerateThreads
PR_EnumerateWaitGroup
PR_ErrorInstallCallback
PR_ErrorInstallTable
PR_ErrorLanguages
PR_ErrorToName
PR_ErrorToString
PR_ExitMonitor
PR_ExplodeTime
PR_ExportFileMapAsString
PR_FD_CLR
PR_FD_ISSET
PR_FD_NCLR
PR_FD_NISSET
PR_FD_NSET
PR_FD_SET
PR_FD_ZERO
PR_FileDesc2NativeHandle
PR_FindFunctionSymbol
PR_FindFunctionSymbolAndLibrary
PR_FindNextCounterQname
PR_FindNextCounterRname
PR_FindNextTraceQname
PR_FindNextTraceRname
PR_FindSymbol
PR_FindSymbolAndLibrary
PR_FloorLog2
PR_FormatTime
PR_FormatTimeUSEnglish
PR_fprintf
PR_Free
PR_FreeAddrInfo
PR_FreeFileDesc
PR_FreeLibraryName
PR_GetAddrInfoByName
PR_GetCanonNameFromAddrInfo
PR_GetConnectStatus
PR_GetCounter
PR_GetCounterHandleFromName
PR_GetCounterNameFromHandle
PR_GetCurrentThread
PR_GetDefaultIOMethods
PR_GetDescType
PR_GetDirectorySeparator
PR_GetDirectorySepartor
PR_GetEnv
PR_GetError
PR_GetErrorText
PR_GetErrorTextLength
PR_GetFileInfo
PR_GetFileInfo64
PR_GetFileMethods
PR_GetGCRegisters
PR_GetHostByAddr
PR_GetHostByName
PR_GetIdentitiesLayer
PR_GetInheritedFD
PR_GetInheritedFileMap
PR_GetIPNodeByName
PR_GetLayersIdentity
PR_GetLibraryFilePathname
PR_GetLibraryName
PR_GetLibraryPath
PR_GetMemMapAlignment
PR_GetMonitorEntryCount
PR_GetNameForIdentity
PR_GetNumberOfProcessors
PR_GetOpenFileInfo
PR_GetOpenFileInfo64
PR_GetOSError
PR_GetPageShift
PR_GetPageSize
PR_GetPathSeparator
PR_GetPeerName
PR_GetPhysicalMemorySize
PR_GetPipeMethods
PR_GetProtoByName
PR_GetProtoByNumber
PR_GetRandomNoise
PR_GetSocketOption
PR_GetSockName
PR_GetSP
PR_GetSpecialFD
PR_GetStackSpaceLeft
PR_GetSysfdTableMax
PR_GetSystemInfo
PR_GetTCPMethods
PR_GetThreadAffinityMask
PR_GetThreadID
PR_GetThreadName
PR_GetThreadPriority
PR_GetThreadPrivate
PR_GetThreadScope
PR_GetThreadState
PR_GetThreadType
PR_GetTraceEntries
PR_GetTraceHandleFromName
PR_GetTraceNameFromHandle
PR_GetTraceOption
PR_GetUDPMethods
PR_GetUniqueIdentity
PR_GetVersion
PR_GMTParameters
PR_htonl
PR_htonll
PR_htons
PR_ImplodeTime
PR_ImportFile
PR_ImportFileMapFromString
PR_ImportPipe
PR_ImportTCPSocket
PR_ImportUDPSocket
PR_IncrementCounter
PR_Init
PR_Initialize
PR_Initialized
PR_InitializeNetAddr
PR_Interrupt
PR_IntervalNow
PR_IntervalToMicroseconds
PR_IntervalToMilliseconds
PR_IntervalToSeconds
PR_IsNetAddrType
PR_JoinJob
PR_JoinThread
PR_JoinThreadPool
PR_KillProcess
PR_Listen
PR_LoadLibrary
PR_LoadLibraryWithFlags
PR_LoadStaticLibrary
PR_LocalTimeParameters
PR_Lock
PR_LockFile
PR_LockOrderedLock
PR_LogFlush
PR_LogPrint
PR_MakeDir
PR_Malloc
PR_MemMap
PR_MemUnmap
PR_MicrosecondsToInterval
PR_MillisecondsToInterval
PR_MkDir
PR_NetAddrToString
PR_NewCondVar
PR_NewLock
PR_NewLogModule
PR_NewMonitor
PR_NewNamedMonitor
PR_NewPollableEvent
PR_NewProcessAttr
PR_NewRWLock
PR_NewSem
PR_NewTCPSocket
PR_NewTCPSocketPair
PR_NewThreadPrivateIndex
PR_NewUDPSocket
PR_NormalizeTime
PR_Notify
PR_NotifyAll
PR_NotifyAllCondVar
PR_NotifyCondVar
PR_Now
PR_ntohl
PR_ntohll
PR_ntohs
PR_Open
PR_OpenAnonFileMap
PR_OpenDir
PR_OpenFile
PR_OpenSemaphore
PR_OpenSharedMemory
PR_OpenTCPSocket
PR_OpenUDPSocket
PR_ParseTimeString
PR_ParseTimeStringToExplodedTime
PR_Poll
PR_PopIOLayer
PR_PostSem
PR_PostSemaphore
PR_ProcessAttrSetCurrentDirectory
PR_ProcessAttrSetInheritableFD
PR_ProcessAttrSetInheritableFileMap
PR_ProcessAttrSetStdioRedirect
PR_ProcessExit
PR_PushIOLayer
PR_QueueJob
PR_QueueJob_Accept
PR_QueueJob_Connect
PR_QueueJob_Read
PR_QueueJob_Timer
PR_QueueJob_Write
PR_Read
PR_ReadDir
PR_Realloc
PR_RecordTraceEntries
PR_Recv
PR_RecvFrom
PR_Rename
PR_ResetAlarm
PR_ResetProcessAttr
PR_ResumeAll
PR_RmDir
PR_RWLock_Rlock
PR_RWLock_Unlock
PR_RWLock_Wlock
PR_ScanStackPointers
PR_SecondsToInterval
PR_Seek
PR_Seek64
PR_Select
PR_Send
PR_SendFile
PR_SendTo
PR_SetAlarm
PR_SetConcurrency
PR_SetCounter
PR_SetCPUAffinityMask
PR_SetCurrentThreadName
PR_SetEnv
PR_SetError
PR_SetErrorText
PR_SetFDCacheSize
PR_SetFDInheritable
PR_SetLibraryPath
PR_SetLogBuffering
PR_SetLogFile
PR_SetNetAddr
PR_SetPollableEvent
PR_SetSocketOption
PR_SetStdioRedirect
PR_SetSysfdTableSize
PR_SetThreadAffinityMask
PR_SetThreadDumpProc
PR_SetThreadGCAble
PR_SetThreadPriority
PR_SetThreadPrivate
PR_SetThreadRecycleMode
PR_SetTraceOption
PR_ShowStatus
PR_Shutdown
PR_ShutdownThreadPool
PR_Sleep
PR_smprintf
PR_smprintf_free
PR_snprintf
PR_Socket
PR_sprintf_append
PR_sscanf
PR_StackPop
PR_StackPush
PR_Stat
PR_StringToNetAddr
PR_strtod
PR_SubtractFromCounter
PR_SuspendAll
PR_sxprintf
PR_Sync
PR_TestAndEnterMonitor
PR_TestAndLock
PR_ThreadScanStackPointers
PR_TicksPerSecond
PR_TLockFile
PR_Trace
PR_TransmitFile
PR_UnblockClockInterrupts
PR_UnblockInterrupt
PR_UnloadLibrary
PR_Unlock
PR_UnlockFile
PR_UnlockOrderedLock
PR_USPacificTimeParameters
PR_VersionCheck
PR_vfprintf
PR_vsmprintf
PR_vsnprintf
PR_vsprintf_append
PR_vsxprintf
PR_Wait
PR_WaitCondVar
PR_WaitForPollableEvent
PR_WaitProcess
PR_WaitRecvReady
PR_WaitSem
PR_WaitSemaphore
PR_Write
PR_Writev
PR_Yield
PRP_DestroyNakedCondVar
PRP_NakedBroadcast
PRP_NakedNotify
PRP_NakedWait
PRP_NewNakedCondVar
PRP_TryLock
PT_FPrintStats
SetExecutionEnvironment

nspr4.dll

Netscape Portable Runtime by Mozilla Corporation (Signed)

Remove nspr4.dll
Version:   4.9.1
MD5:   5c94ff7fabe1a23c9ef651d89c1fbded
SHA1:   6e30588bf1d4a805f9dce7116871886f6db8c3bd
SHA256:   7cc421daff6a98dfbbe97b83df2b5c53a33273af2df4730954063639a3038e6c

What is nspr4.dll?

NSPR Library is part of Mozilla Firefox, a free and open source web browser developed by the Mozilla Foundation. Firefox uses the Gecko layout engine to render web pages, which implements current and anticipated web standards. Functions can be added through extensions, created by third-party developers.

About nspr4.dll (from Mozilla Corporation)

“Mozilla Firefox is a fast, full-featured Web browser. Firefox includes pop-up blocking, tab-browsing, integrated Google search, simplified privacy controls, a streamlined browser window that shows you”

DetailsDetails

File name:nspr4.dll
Publisher:Mozilla Foundation
Product name:Netscape Portable Runtime
Description:NSPR Library
Typical file path:C:\Program Files\mozilla firefox\nspr4.dll
File version:4.9.1
Size:167.47 KB (171,488 bytes)
Certificate
Issued to:Mozilla Corporation
Authority (CA):Thawte
Expiration date:Friday, October 18, 2013
Digital DNA
PE subsystem:Windows GUI
File packed:No
Code language:Microsoft Visual C++ 10.0
.NET CLR:No
More details

ResourcesPrograms

The following programs will install this file
FoxyTunes for Firefox
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25% remove
“FoxyTunes is an Extension for Mozilla Firefox that supports the Mozilla Suite and Mozilla Thunderbird. It allows you to control your favorite media player without leaving the browser. The controls are positioned on the status bar or one of the toolbars, so no extra space is wasted. FoxyTunes has several nice features. You can control the playback, adjust the volume, and see what's playing. Many more features are in development, among th...”
Mozilla Firefox x86 en-US
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12% remove
This version includes a "Responsive Design View" developer tool, adds support for the Opus audio format and adds preliminary native PDF support (turned off by default). Silent updates automatically update Firefox to the latest version without notifying the user, a feature that the web browsers Google Chrome and Internet Explorer 8 and above have already implemented, although the user is able to disable that function. Mozilla Firefox (US...
Mozilla Firefox x86 cs
 Mozilla
11% remove
Mozilla Firefox is a free and open source is a web browser coordinated by Mozilla Corporation and Mozilla Foundation that is a heavily localized. Firefox uses the Gecko layout engine to render web pages, which implements current and anticipated web standards. Functions can be added through extensions, created by third-party developers and thus provides an environment for web developers in which they can use built-in tools. Firefox uses ...
Mozilla Firefox x86 en-GB
 Mozilla
4% remove
Mozilla Firefox is a free and open source is a web browser coordinated by Mozilla Corporation and Mozilla Foundation that is a heavily localized. Firefox uses the Gecko layout engine to render web pages, which implements current and anticipated web standards. Functions can be added through extensions, created by third-party developers and thus provides an environment for web developers in which they can use built-in tools. Firefox uses ...
Mozilla Firefox x86 nl
 Mozilla
3% remove
This version includes a "Responsive Design View" developer tool, adds support for the Opus audio format and adds preliminary native PDF support (turned off by default). Silent updates automatically update Firefox to the latest version without notifying the user, a feature that the web browsers Google Chrome and Internet Explorer 8 and above have already implemented, although the user is able to disable that function. Mozilla Firefox (US...
Mozilla Firefox x86 de
 Mozilla
4% remove
Mozilla Firefox is a free and open source is a web browser coordinated by Mozilla Corporation and Mozilla Foundation that is a heavily localized. Firefox uses the Gecko layout engine to render web pages, which implements current and anticipated web standards. Functions can be added through extensions, created by third-party developers and thus provides an environment for web developers in which they can use built-in tools. Firefox uses ...
Mozilla Firefox x86 fr
 Mozilla
8% remove
Mozilla Firefox is a free and open source is a web browser coordinated by Mozilla Corporation and Mozilla Foundation that is a heavily localized. Firefox uses the Gecko layout engine to render web pages, which implements current and anticipated web standards. Functions can be added through extensions, created by third-party developers and thus provides an environment for web developers in which they can use built-in tools. Firefox uses ...
Mozilla Firefox x86 el
 Mozilla
10% remove
Mozilla Firefox is a free and open source is a web browser coordinated by Mozilla Corporation and Mozilla Foundation that is a heavily localized. Firefox uses the Gecko layout engine to render web pages, which implements current and anticipated web standards. Functions can be added through extensions, created by third-party developers and thus provides an environment for web developers in which they can use built-in tools. Firefox uses ...
Mozilla Firefox x86 ru
 Mozilla
4% remove
Mozilla Firefox is a free and open source is a web browser coordinated by Mozilla Corporation and Mozilla Foundation that is a heavily localized. Firefox uses the Gecko layout engine to render web pages, which implements current and anticipated web standards. Functions can be added through extensions, created by third-party developers and thus provides an environment for web developers in which they can use built-in tools. Firefox uses ...
Mozilla Firefox x86 it
 Mozilla
4% remove
Mozilla Firefox is a free and open source web browser. Firefox implements many web standards. Firefox uses a sandbox security model, and limits scripts from accessing data from other web sites based on the same origin policy. Firefox 22 includes support for 3D gaming, video chatting, and file sharing.
Mozilla Firefox
 Mozilla
11% remove
Mozilla Firefox is a free and open source is a web browser coordinated by Mozilla Corporation and Mozilla Foundation that is a heavily localized. Firefox uses the Gecko layout engine to render web pages, which implements current and anticipated web standards. Functions can be added through extensions, created by third-party developers and thus provides an environment for web developers in which they can use built-in tools. Firefox uses ...
Mozilla Firefox x86 pl
 Mozilla
11% remove
This version includes a "Responsive Design View" developer tool, adds support for the Opus audio format and adds preliminary native PDF support (turned off by default). Silent updates automatically update Firefox to the latest version without notifying the user, a feature that the web browsers Google Chrome and Internet Explorer 8 and above have already implemented, although the user is able to disable that function. Mozilla Firefox (US...
Mozilla Firefox x86 pt-BR
 Mozilla
10% remove
Mozilla Firefox is a free and open source web browser. Firefox implements many web standards. Firefox uses a sandbox security model, and limits scripts from accessing data from other web sites based on the same origin policy. Firefox 22 includes support for 3D gaming, video chatting, and file sharing.
Mozilla Firefox x86 ar
 Mozilla
4% remove
Mozilla Firefox is a free and open source is a web browser coordinated by Mozilla Corporation and Mozilla Foundation that is a heavily localized. Firefox uses the Gecko layout engine to render web pages, which implements current and anticipated web standards. Functions can be added through extensions, created by third-party developers and thus provides an environment for web developers in which they can use built-in tools. Firefox uses ...
Mozilla Firefox x86 es-ES
 Mozilla
10% remove
“Mozilla Firefox is a fast, full-featured Web browser. Firefox includes pop-up blocking, tab-browsing, integrated Google search, simplified privacy controls, a streamlined browser window that shows you more of the page than any other browser and a number of additional features that work with you to help you get the most out of your time online.”
Mozilla Firefox x86 hu
 Mozilla
5% remove
“Mozilla Firefox is a fast, full-featured Web browser. Firefox includes pop-up blocking, tab-browsing, integrated Google search, simplified privacy controls, a streamlined browser window that shows you more of the page than any other browser and a number of additional features that work with you to help you get the most out of your time online.”
Mozilla Firefox x86 fi
 Mozilla
12% remove
Mozilla Firefox is a free and open source web browser. Firefox 26 changed the behavior of Java plugins to "click-to-play" mode instead of automatically running them. It also added password manager support for script-generated fields, and the ability for Windows users without advanced write permissions to update Firefox.

Windows OS versionsDistribution by Windows OS

OS versiondistribution
Windows 7 Home Premium 23.31%
Microsoft Windows XP 21.80%
Windows 7 Ultimate 21.05%
Windows 7 Professional 12.03%
Windows Vista Home Premium 6.02%
Windows 8 Pro 5.26%
Windows 7 Enterprise 1.50%
Windows 8 Pro with Media Center 1.50%
Windows 8.1 0.75%
Windows 7 Home Basic 0.75%
Windows 8 Enterprise 0.75%
Windows 7 Ultimate N 0.75%
Windows 8 Enterprise N 0.75%
Windows 7 Starter 0.75%
Windows Vista Home Basic 0.75%
Windows 8 Release Preview 0.75%
Windows 8 0.75%
Windows Vista Ultimate 0.75%

Distribution by countryDistribution by country

United States installs about 25.56% of Netscape Portable Runtime.

OEM distributionDistribution by PC manufacturer

PC Manufacturerdistribution
Toshiba 23.53%
ASUS 23.53%
Hewlett-Packard 17.65%
Medion 11.76%
Dell 11.76%
Lenovo 11.76%
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