Should I block it?

No, this file is 100% safe to run.

Additional versions

6.3.9600.16384 (winblue_rtm.130821-1623)	3.88%
6.3.9600.16384 (winblue_rtm.130821-1623)	0.06%
6.3.9431.0 (winmain_bluemp.130615-1214)	0.19%
6.3.9431.0 (winmain_bluemp.130615-1214)	0.02%
6.2.9200.16384 (win8_rtm.120725-1247)	2.05%
6.2.9200.16384 (win8_rtm.120725-1247)	11.99%
6.2.8400.0 (winmain_win8rc.120518-1423)	0.06%
6.2.8400.0 (winmain_win8rc.120518-1423)	0.06%
6.2.8250.0 (winmain_win8beta.120217-1520)	0.02%
6.2.8102.0 (winmain_win8m3.110823-1455)	0.06%
6.1.7600.16385 (win7_rtm.090713-1255)	1.11%
6.1.7600.16385 (win7_rtm.090713-1255)	2.26%
6.1.7600.16385 (win7_rtm.090713-1255)	3.11%
6.1.7600.16385 (win7_rtm.090713-1255)	31.04%
6.1.7600.16385 (win7_rtm.090713-1255)	4.56%
6.1.7600.16385 (win7_rtm.090713-1255)	11.42%
6.1.7600.16385 (win7_rtm.090713-1255)	1.43%
6.1.7600.16385 (win7_rtm.090713-1255)	1.64%
6.1.7600.16385 (win7_rtm.090713-1255)	0.87%
6.1.7600.16385 (win7_rtm.090713-1255)	0.81%
6.1.7600.16385 (win7_rtm.090713-1255)	0.02%
6.1.7600.16385 (win7_rtm.090713-1255)	0.02%
6.1.7600.16385 (win7_rtm.090713-1255)	0.02%
6.1.7600.16385 (win7_rtm.090713-1255)	0.02%
6.1.7600.16385 (win7_rtm.090713-1255)	0.02%
View more
6.1.7600.16385 (win7_rtm.090713-1255)	0.02%
6.0.6000.16386 (vista_rtm.061101-2205)	5.48%
6.0.6000.16386 (vista_rtm.061101-2205)	0.02%
6.0.6000.16386 (vista_rtm.061101-2205)	0.36%
6.0.6000.16386 (vista_rtm.061101-2205)	1.17%
6.0.6000.16386 (vista_rtm.061101-2205)	0.36%
6.0.6000.16386 (vista_rtm.061101-2205)	0.02%
6.0.6000.16386 (vista_rtm.061101-2205)	0.02%
5.2.3790.4759 (srv03_sp2_gdr.100817-0343)	0.02%
5.2.3790.3959 (srv03_sp2_rtm.070216-1710)	0.02%
5.2.3790.3959 (srv03_sp2_rtm.070216-1710)	0.02%
5.1.2600.6024 (xpsp_sp3_qfe.100817-1627)	1.32%
5.1.2600.6024 (xpsp_sp3_gdr.100817-1626)	10.35%
5.1.2600.5512 (xpsp.080413-0852)	1.17%
5.1.2600.5512 (xpsp.080413-0852)	0.11%
5.1.2600.5512 (xpsp.080413-0852)	0.11%
5.1.2600.5512 (xpsp.080413-0852)	0.06%
5.1.2600.5512 (xpsp.080413-0852)	0.02%
5.1.2600.5512 (xpsp.080413-0852)	0.11%
5.1.2600.5512 (xpsp.080413-0852)	0.02%
5.1.2600.3311 (xpsp.080211-1047)	0.02%
5.1.2600.3300 (xpsp.080125-0707)	0.02%
5.1.2600.3244 (xpsp.071030-0319)	0.02%
5.1.2600.2696 (xpsp_sp2_gdr.050610-1519)	0.53%
5.1.2600.2696 (xpsp_sp2_gdr.050610-1519)	0.02%
5.1.2600.2696 (xpsp.050610-1527)	0.36%
7 other versions

PE file structure

Show functions

Import table

advapi32.dll

RegisterServiceCtrlHandlerExW, RegCloseKey, RegOpenKeyExW, RegDisablePredefinedCache, RegQueryValueExW, ConvertStringSecurityDescriptorToSecurityDescriptorW, SetServiceStatus, StartServiceCtrlDispatcherW, SetThreadToken, OpenThreadToken, OpenProcessToken

api-ms-win-core-console-l1-1-0.dll

SetConsoleCtrlHandler

api-ms-win-core-debug-l1-1-1.dll

IsDebuggerPresent, OutputDebugStringW, DebugBreak

api-ms-win-core-errorhandling-l1-1-1.dll

SetErrorMode, GetErrorMode, SetUnhandledExceptionFilter, GetLastError, RaiseException, UnhandledExceptionFilter, SetLastError

api-ms-win-core-file-l1-2-0.dll

GetTempFileNameW, DeleteFileW, CreateFileW, ReadFile

api-ms-win-core-file-l2-1-0.dll

MoveFileExW

api-ms-win-core-handle-l1-1-0.dll

CloseHandle, DuplicateHandle

api-ms-win-core-heap-l1-2-0.dll

HeapSetInformation, HeapDestroy, HeapCreate, GetProcessHeap

api-ms-win-core-interlocked-l1-2-0.dll

InterlockedIncrement, InterlockedDecrement, InterlockedExchange, InterlockedCompareExchange

api-ms-win-core-libraryloader-l1-1-1.dll

DisableThreadLibraryCalls, LoadLibraryExW, GetModuleHandleW, FreeLibrary, GetModuleHandleA

api-ms-win-core-localregistry-l1-1-0.dll

RegQueryInfoKeyW, RegGetKeySecurity, RegSetKeySecurity, RegEnumValueW, RegDeleteValueW, RegCreateKeyExW, RegSetValueExW, RegEnumKeyExW, RegDeleteKeyExW, RegOpenCurrentUser, RegQueryValueExW, RegOpenKeyExW, RegCloseKey, RegGetValueW

api-ms-win-core-processthreads-l1-1-1.dll

ExitProcess, GetCurrentThread, GetCurrentProcessId, GetCurrentThreadId, SetThreadToken, TlsFree, ExitThread, TerminateProcess, OpenProcessToken, SetPriorityClass, GetCurrentProcess, TlsGetValue, OpenProcess, CreateProcessAsUserW, OpenThreadToken, TlsSetValue, TlsAlloc, CreateThread

api-ms-win-core-profile-l1-1-0.dll

QueryPerformanceCounter

api-ms-win-core-registry-l1-1-0.dll

RegDeleteTreeW, RegSetValueExW, RegGetKeySecurity, RegEnumValueW, RegSetKeySecurity, RegGetValueW, RegDeleteKeyExW, RegOpenCurrentUser, RegQueryValueExW, RegOpenKeyExW, RegDisablePredefinedCacheEx, RegQueryInfoKeyW, RegCloseKey, RegCreateKeyExW, RegDeleteValueW, RegEnumKeyExW

api-ms-win-core-string-l1-1-0.dll

CompareStringW

api-ms-win-core-synch-l1-2-0.dll

OpenEventW, AcquireSRWLockShared, ReleaseSRWLockShared, CreateMutexW, InitializeCriticalSection, WaitForSingleObject, SetEvent, EnterCriticalSection, LeaveCriticalSection, CreateEventW, ReleaseSRWLockExclusive, ReleaseMutex, InitializeSRWLock, AcquireSRWLockExclusive, InitializeCriticalSectionAndSpinCount, Sleep

api-ms-win-core-sysinfo-l1-2-0.dll

GetSystemTime, GetTickCount, GetSystemWindowsDirectoryW, GetSystemTimeAsFileTime, GetVersionExW

api-ms-win-eventing-classicprovider-l1-1-0.dll

UnregisterTraceGuids, TraceEvent, RegisterTraceGuidsW, GetTraceLoggerHandle

api-ms-win-power-base-l1-1-0.dll

GetPwrCapabilities

api-ms-win-security-base-l1-2-0.dll

DuplicateToken, SetTokenInformation, IsWellKnownSid, GetSecurityDescriptorDacl, AddAccessDeniedAceEx, GetLengthSid, ImpersonateLoggedOnUser, AddAccessAllowedAceEx, CreateWellKnownSid, GetTokenInformation, GetSidSubAuthority, GetSidSubAuthorityCount, EqualSid, InitializeSecurityDescriptor, DuplicateTokenEx, SetSecurityDescriptorDacl, GetAclInformation, AddAce, CopySid, GetAce, AllocateAndInitializeSid, FreeSid, RevertToSelf, CheckTokenMembership, InitializeAcl

api-ms-win-service-core-l1-1-0.dll

SetServiceStatus, RegisterServiceCtrlHandlerExW, StartServiceCtrlDispatcherW

api-ms-win-service-core-l1-1-1.dll

StartServiceCtrlDispatcherW, SetServiceStatus, RegisterServiceCtrlHandlerExW

dnsapi.dll

DnsQuery_W, DnsFree

kernel32.dll

lstrcmpiW, QueueUserWorkItem, AcquireSRWLockExclusive, ReleaseSRWLockExclusive, AcquireSRWLockShared, ReleaseSRWLockShared, InitializeSRWLock, GetSystemTime, MoveFileExW, IsDebuggerPresent, AddVectoredExceptionHandler, DeleteFileW, GetCurrentProcessId, GetComputerNameW, WideCharToMultiByte, lstrlenW, LoadLibraryW, GetCurrentThread, LoadLibraryExW, SetErrorMode, SetPriorityClass, HeapDestroy, TlsFree, DisableThreadLibraryCalls, HeapCreate, TlsGetValue, SetConsoleCtrlHandler, InitializeCriticalSection, DuplicateHandle, ReadFile, CreateFileW, GetTempFileNameW, CompareStringW, ExitThread, GetLastError, CloseHandle, WaitForSingleObject, GetModuleHandleW, CreateEventW, CreateThread, GetTickCount, ExitProcess, Sleep, OpenEventW, HeapSetInformation, GetProcessHeap, InitializeCriticalSectionAndSpinCount, TlsAlloc, GetVersionExW, LeaveCriticalSection, EnterCriticalSection, SetEvent, SetLastError, TlsSetValue, InterlockedDecrement, OpenProcess, InterlockedIncrement, RaiseException, GetProcAddress, FreeLibrary, InterlockedCompareExchange, LoadLibraryExA, InterlockedExchange, SetUnhandledExceptionFilter, GetModuleHandleA, QueryPerformanceCounter, GetCurrentThreadId, DebugBreak, GetSystemTimeAsFileTime, TerminateProcess, GetCurrentProcess, UnhandledExceptionFilter, SetThreadpoolTimer, HeapAlloc, HeapFree, DeleteCriticalSection, ResetEvent, LocalFree, LoadLibraryA, LocalAlloc, GetModuleHandleExW, CloseThreadpoolTimer, WaitForThreadpoolTimerCallbacks, CreateThreadpoolTimer, ResolveDelayLoadedAPI, GetTickCount64, OutputDebugStringW

msvcrt.dll

DllMain

ntdll.dll

RtlIpv6AddressToStringW, RtlIpv4AddressToStringW, NtClose, NtOpenThreadToken, NtSetInformationThread, NtOpenProcessToken, RtlReportException, EtwEventEnabled, TpReleasePool, TpAllocTimer, TpSetTimer, TpAllocWork, TpPostWork, TpSimpleTryPost, TpAllocWait, TpAllocPool, TpSetPoolMaxThreads, TpSetPoolMinThreads, TpAllocAlpcCompletion, TpAllocIoCompletion, TpStartAsyncIoOperation, RtlNtStatusToDosError, TpCallbackMayRunLong, TpWaitForAlpcCompletion, TpReleaseAlpcCompletion, TpWaitForIoCompletion, TpReleaseIoCompletion, TpWaitForTimer, TpReleaseTimer, TpSetWait, TpWaitForWait, TpReleaseWait, TpWaitForWork, TpReleaseWork, RtlValidRelativeSecurityDescriptor, EtwEventWrite, EtwUnregisterTraceGuids, EtwRegisterTraceGuidsW, EtwGetTraceLoggerHandle, EtwGetTraceEnableLevel, EtwGetTraceEnableFlags, EtwTraceMessage, EtwEventUnregister, EtwEventRegister, WinSqmIsOptedIn, WinSqmAddToStreamEx, WinSqmSetDWORD, WinSqmIncrementDWORD, RtlIpv4AddressToStringExW, RtlIpv4StringToAddressW, RtlIpv6AddressToStringExW, RtlIpv6StringToAddressW

powrprof.dll

PowerDeterminePlatformRole, GetPwrCapabilities

rpcrt4.dll

RpcServerInqBindings, RpcBindingToStringBindingW, RpcBindingVectorFree, RpcEpRegisterW, RpcServerRegisterIf, RpcServerRegisterIf2, RpcObjectSetType, RpcServerUseProtseqW, RpcServerUseProtseqEpA, RpcStringBindingComposeW, RpcBindingFromStringBindingW, RpcBindingFree, RpcSmDestroyClientContext, I_RpcBindingInqTransportType, NdrAsyncClientCall, NdrClientCall2, RpcServerTestCancel, I_RpcExceptionFilter, RpcServerUnsubscribeForNotification, RpcServerSubscribeForNotification, RpcAsyncAbortCall, RpcSsContextLockExclusive, RpcStringFreeW, RpcRevertToSelfEx, RpcAsyncCompleteCall, RpcImpersonateClient, RpcRevertToSelf, RpcServerInqBindingHandle, I_RpcBindingIsClientLocal, I_RpcSessionStrictContextHandle, RpcRaiseException, NdrAsyncServerCall, NdrServerCall2, RpcMgmtSetServerStackSize, RpcServerInqDefaultPrincNameW, RpcServerRegisterAuthInfoW, RpcServerListen, RpcStringBindingParseW, RpcServerRegisterIf3, RpcBindingServerFromClient

slc.dll

SLGetWindowsInformationDWORD

user32.dll

SendNotifyMessageW, MsgWaitForMultipleObjects, TranslateMessage, DispatchMessageW, PeekMessageW, UnregisterDeviceNotification, RegisterDeviceNotificationW, RegisterPowerSettingNotification, UnregisterPowerSettingNotification

Export table

GetSpoolerTlsIndexes

PrvAbortPrinter

PrvAddFormW

PrvAddJobW

PrvAddMonitorW

PrvAddPerMachineConnectionW

PrvAddPortExW

PrvAddPortW

PrvAddPrinterConnectionW

PrvAddPrinterDriverExW

PrvAddPrinterDriverW

PrvAddPrinterExW

PrvAddPrinterW

PrvAddPrintProcessorW

PrvAddPrintProvidorW

PrvAdjustPointers

PrvAdjustPointersInStructuresArray

PrvAlignKMPtr

PrvAlignRpcPtr

PrvAllocSplStr

PrvAllowRemoteCalls

PrvAppendPrinterNotifyInfoData

PrvbGetDevModePerUser

PrvbSetDevModePerUser

PrvBuildOtherNamesFromMachineName

PrvCacheAddName

PrvCacheCreateAndAddNode

PrvCacheCreateAndAddNodeWithIPAddresses

PrvCacheDeleteNode

PrvCacheIsNameCluster

PrvCacheIsNameInNodeList

PrvCallDrvDevModeConversion

PrvCallRouterFindFirstPrinterChangeNotification

PrvCheckLocalCall

PrvClosePrinter

PrvClusterSplClose

PrvClusterSplIsAlive

PrvClusterSplOpen

PrvConfigurePortW

PrvCreatePrinterIC

PrvDeleteFormW

PrvDeleteMonitorW

PrvDeletePerMachineConnectionW

PrvDeletePortW

PrvDeletePrinter

PrvDeletePrinterConnectionW

PrvDeletePrinterDataExW

PrvDeletePrinterDataW

PrvDeletePrinterDriverExW

PrvDeletePrinterDriverW

PrvDeletePrinterIC

PrvDeletePrinterKeyW

PrvDeletePrintProcessorW

PrvDeletePrintProvidorW

PrvDllAllocSplMem

PrvDllAllocSplStr

PrvDllFreeSplMem

PrvDllFreeSplStr

PrvDllReallocSplMem

PrvDllReallocSplStr

PrvEndDocPrinter

PrvEndPagePrinter

PrvEnumFormsW

PrvEnumJobsW

PrvEnumMonitorsW

PrvEnumPerMachineConnectionsW

PrvEnumPortsW

PrvEnumPrinterDataExW

PrvEnumPrinterDataW

PrvEnumPrinterDriversW

PrvEnumPrinterKeyW

PrvEnumPrintersW

PrvEnumPrintProcessorDatatypesW

PrvEnumPrintProcessorsW

PrvFindClosePrinterChangeNotification

PrvFlushPrinter

PrvFormatPrinterForRegistryKey

PrvFormatRegistryKeyForPrinter

PrvFreeOtherNames

PrvGetFormW

PrvGetJobAttributes

PrvGetJobAttributesEx

PrvGetJobW

PrvGetNetworkId

PrvGetPrinterDataExW

PrvGetPrinterDataW

PrvGetPrinterDriverDirectoryW

PrvGetPrinterDriverExW

PrvGetPrinterDriverW

PrvGetPrinterW

PrvGetPrintProcessorDirectoryW

PrvGetServerPolicy

PrvGetShrinkedSize

PrvGetSpoolerTlsIndexes

PrvImpersonatePrinterClient

PrvInitializeRouter

PrvIsNamedPipeRpcCall

PrvIsNameTheLocalMachineOrAClusterSpooler

PrvMarshallDownStructure

PrvMarshallDownStructuresArray

PrvMarshallUpStructure

PrvMarshallUpStructuresArray

PrvMIDL_user_allocate

PrvMIDL_user_allocate1

PrvMIDL_user_free

PrvMIDL_user_free1

PrvOldGetPrinterDriverW

PrvOpenPrinter2W

PrvOpenPrinterExW

PrvOpenPrinterPort2W

PrvOpenPrinterW

PrvPackStrings

PrvPartialReplyPrinterChangeNotification

PrvPlayGdiScriptOnPrinterIC

PrvPrinterHandleRundown

PrvPrinterMessageBoxW

PrvProvidorFindClosePrinterChangeNotification

PrvProvidorFindFirstPrinterChangeNotification

PrvReadPrinter

PrvReallocSplMem

PrvReallocSplStr

PrvRemoteFindFirstPrinterChangeNotification

PrvReplyClosePrinter

PrvReplyOpenPrinter

PrvReplyPrinterChangeNotification

PrvReplyPrinterChangeNotificationEx

PrvReportJobProcessingProgress

PrvResetPrinterW

PrvRevertToPrinterSelf

PrvRouterAddPrinterConnection2

PrvRouterAllocBidiMem

PrvRouterAllocBidiResponseContainer

PrvRouterAllocPrinterNotifyInfo

PrvRouterBroadcastMessage

PrvRouterCorePrinterDriverInstalled

PrvRouterCreatePrintAsyncNotificationChannel

PrvRouterDeletePrinterDriverPackage

PrvRouterFindCompatibleDriver

PrvRouterFindFirstPrinterChangeNotification

PrvRouterFindNextPrinterChangeNotification

PrvRouterFreeBidiMem

PrvRouterFreeBidiResponseContainer

PrvRouterFreePrinterNotifyInfo

PrvRouterGetCorePrinterDrivers

PrvRouterGetPrintClassObject

PrvRouterGetPrinterDriverPackagePath

PrvRouterInstallPrinterDriverFromPackage

PrvRouterInternalGetPrinterDriver

PrvRouterRefreshPrinterChangeNotification

PrvRouterRegisterForPrintAsyncNotifications

PrvRouterReplyPrinter

PrvRouterSpoolerSetPolicy

PrvRouterUnregisterForPrintAsyncNotifications

PrvRouterUploadPrinterDriverPackage

PrvScheduleJob

PrvSeekPrinter

PrvSendRecvBidiData

PrvSetFormW

PrvSetJobW

PrvSetPortW

PrvSetPrinterDataExW

PrvSetPrinterDataW

PrvSetPrinterW

PrvSplCloseSpoolFileHandle

PrvSplCommitSpoolData

PrvSplDriverUnloadComplete

PrvSplGetClientUserHandle

PrvSplGetSpoolFileInfo

PrvSplGetUserSidStringFromToken

PrvSplInitializeWinSpoolDrv

PrvSplIsSessionZero

PrvSplIsUpgrade

PrvSplPowerEvent

PrvSplProcessPnPEvent

PrvSplProcessSessionEvent

PrvSplPromptUIInUsersSession

PrvSplQueryUserInfo

PrvSplReadPrinter

PrvSplRegisterForDeviceEvents

PrvSplRegisterForSessionEvents

PrvSplShutDownRouter

PrvSplUnregisterForDeviceEvents

PrvSplUnregisterForSessionEvents

PrvSpoolerFindClosePrinterChangeNotification

PrvSpoolerFindFirstPrinterChangeNotification

PrvSpoolerFindNextPrinterChangeNotification

PrvSpoolerFreePrinterNotifyInfo

PrvSpoolerHasInitialized

PrvSpoolerInit

PrvSpoolerRefreshPrinterChangeNotification

PrvStartDocPrinterW

PrvStartPagePrinter

PrvUndoAlignKMPtr

PrvUndoAlignRpcPtr

PrvUpdateBufferSize

PrvUpdatePrinterRegAll

PrvUpdatePrinterRegUser

PrvWaitForPrinterChange

PrvWaitForSpoolerInitialization

PrvWritePrinter

PrvXcvDataW

ServerGetPrintClassObject

ServerGetTlsBindingHandle

YAbortPrinter

YAddJob

YDriverUnloadComplete

YEndDocPrinter

YEndPagePrinter

YFlushPrinter

YGetPrinter

YGetPrinterDriver2

YGetPrinterDriverDirectory

YReadPrinter

YSeekPrinter

YSetJob

YSetPort

YSetPrinter

YSplReadPrinter

YStartDocPrinter

YStartPagePrinter

YWritePrinter

spoolsv.exe

Spooler SubSystem App by Microsoft

Remove spoolsv.exe

Version:	5.1.2600.3244 (xpsp.071030-0319)
MD5:	1c97a84d6940a56eae099ec61bb15e43
SHA1:	56e6c918c22c3152a58b26513bb886236da3086e
SHA256:	3b4fbd6560b62d375787ba876e11776792749433d1ddd1ba6b280b3415eb7e0c

This is a Windows system installed file with Windows File Protection (WFP) enabled.

Overview

spoolsv.exe runs as a service under the name Spouleur d'impression (Spooler) with extensive SYSTEM privileges (full administrator access). This version is installed on Windows XP and is compiled as a 32 bit program.

Details

File name:	spoolsv.exe
Publisher:	Microsoft Corporation
Product name:	Spooler SubSystem App
Description:	Microsoft® Windows® Operating System
Typical file path:	C:\Windows\System32\spoolsv.exe
Original name:	spoolsv.exe.mui
File version:	5.1.2600.3244 (xpsp.071030-0319)
Product version:	5.1.2600.3244
Size:	56.5 KB (57,856 bytes)
Digital DNA
Entropy:	6.401537
File packed:	No
Code language:	Microsoft Visual C++
.NET CLR:	No

More details

Behaviors

Services

Runs under 'SYSTEM\CurrentControlSet\Services' by the Service Controller (services.exe)

Resource utilization

(Note: statistics below are averages based on a minimum sample size of 200 unique participants)

Averages

CPU
Total CPU:	0.00053192%	0.028634%
Kernel CPU:	0.00044612%	0.013761%
User CPU:	0.00008579%	0.014873%
Kernel CPU time:	78 ms/min	100,923,805ms/min
Memory
Private memory:	2.83 MB	21.59 MB
Private (maximum):	4.35 MB
Private (minimum):	136 KB
Non-paged memory:	2.83 MB	21.59 MB
Virtual memory:	40.15 MB	140.96 MB
Virtual memory (peak):	42.61 MB	169.69 MB
Working set:	852 KB	18.61 MB
Working set (peak):	4.38 MB	37.95 MB
Page faults:	2,010/min	2,039/min
I/O
I/O read transfer:	26 Bytes/sec	1.02 MB/min
I/O read operations:	1/sec	343/min
I/O write transfer:	0 Bytes/sec	274.99 KB/min
I/O write operations:	1/sec	227/min
I/O other transfer:	6 Bytes/sec	448.09 KB/min
I/O other operations:	1/sec	1,671/min
Resource allocations
Threads:	10	12
Handles:	108	600
GUI GDI count:	5	103

Process properties

Integrety level:	Undefined
Platform:	32-bit
Command line:	C:\Windows\System32\spoolsv.exe
Owner:	SYSTEM
Windows Service
Service name:	Spooler
Display name:	Spouleur d'impression
Description:	“Charge les fichiers en mémoire pour une impression ultérieure”
Type:	Win32OwnProcess, InteractiveProcess
Parent process:	services.exe (by Microsoft)

Distribution by Windows OS

OS version	distribution
Windows 7 Home Premium	59.50%
Windows 7 Ultimate	25.00%
Windows 7 Professional	12.00%
Windows 7 Home Basic	3.00%
Windows Vista Home Premium	0.50%

Distribution by country

United States installs about 50.51% of Spooler SubSystem App.

Distribution by PC manufacturer

PC Manufacturer	distribution
Dell	24.59%
Hewlett-Packard	21.31%
ASUS	14.75%
Acer	13.93%
Toshiba	13.11%
Sony	4.92%
GIGABYTE	2.46%
Alienware	1.64%
Samsung	1.64%
Lenovo	1.64%

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