Should I block it?

No, this file is 100% safe to run.

VersionsAdditional versions

6.3.9600.16384 (winblue_rtm.130821-1623) 0.07%
6.3.9600.16384 (winblue_rtm.130821-1623) 0.07%
6.2.9200.16384 (win8_rtm.120725-1247) 0.13%
6.2.9200.16384 (win8_rtm.120725-1247) 0.07%
6.1.7600.16385 (win7_rtm.090713-1255) 0.20%
6.1.7600.16385 (win7_rtm.090713-1255) 0.33%
6.0.6000.16386 (vista_rtm.061101-2205) 0.07%
6.0.6000.16386 (vista_rtm.061101-2205) 0.07%
5.1.2600.2180 (xpsp_sp2_rtm.040803-2158) 0.07%
15.0.4454.1000 0.91%
15.0.4454.1000 4.70%
15.0.4433.1506 0.07%
15.0.4420.1017 1.57%
15.0.4420.1017 1.37%
15.0.4128.1022 1.17%
15.0.4128.1019 0.07%
15.0.4128.1014 0.59%
15.0.4128.1014 0.20%
14.0.4730.1010 36.46%
14.0.4730.1010 3.39%
14.0.4730.1010 0.07%
14.0.4730.1010 0.07%
12.0.6413.1000 0.20%
12.0.4518.1014 38.36%
12.0.4518.1014 0.07%

PE structurePE file structure

Show functions
Import table
RegEnumValueW, CryptReleaseContext, CryptAcquireContextW, SetFileSecurityW, RegDeleteKeyW, OpenThreadToken, CheckTokenMembership, ConvertStringSecurityDescriptorToSecurityDescriptorW, LookupAccountNameW, AllocateAndInitializeSid, FreeSid, CryptHashData, CryptGetHashParam, CryptCreateHash, CryptDestroyHash, RegisterServiceCtrlHandlerW, RegCloseKey, RegEnumKeyExW, RegCreateKeyExW, RegOpenKeyExW, RegSetValueExW, SetThreadToken, RegQueryValueExW, RegNotifyChangeKeyValue, SetServiceStatus, StartServiceCtrlDispatcherW, DuplicateToken, RegDeleteValueW
FormatMessageA, GetComputerNameW, GetModuleHandleA, GetStartupInfoA, TerminateProcess, GetCurrentProcess, UnhandledExceptionFilter, SetUnhandledExceptionFilter, QueryPerformanceCounter, GetCurrentThreadId, GetCurrentProcessId, HeapAlloc, GetProcessHeap, HeapReAlloc, HeapFree, HeapSize, RaiseException, LoadLibraryA, MoveFileExW, GetLastError, GetModuleFileNameW, CloseHandle, SetEvent, InterlockedIncrement, InterlockedDecrement, lstrlenW, GetDriveTypeW, GetLogicalDrives, lstrcmpW, DeleteCriticalSection, LeaveCriticalSection, EnterCriticalSection, Sleep, ExitProcess, InitializeCriticalSection, GetCommandLineW, GetTickCount, ReleaseMutex, ResetEvent, WaitForMultipleObjectsEx, SetErrorMode, CreateEventW, CreateMutexW, CreateProcessW, GetSystemInfo, InterlockedExchange, CreateFileA, ReadFile, SetFilePointer, DosDateTimeToFileTime, MultiByteToWideChar, FreeLibrary, GetProcAddress, LoadLibraryW, WideCharToMultiByte, CreateFileW, ReleaseSemaphore, WaitForSingleObject, WaitForMultipleObjects, CreateThread, CreateSemaphoreW, VirtualFree, VirtualAlloc, SetFilePointerEx, GetSystemTimeAsFileTime, SystemTimeToFileTime, GetSystemTime, SetFileTime, SetEndOfFile, WriteFile, GlobalFree, GlobalAlloc, GetFileAttributesExW, GetFileSizeEx, FindClose, FindFirstFileW, GetFileAttributesW, CopyFileW, CreateHardLinkW, SetFileAttributesW, DeleteFileW, GetTempPathA, GetTempPathW, GetFileTime, FindNextFileW, LocalFree, GetCurrentThread, CreateDirectoryW, RemoveDirectoryW, lstrlenA, SystemTimeToTzSpecificLocalTime, GetTimeZoneInformation, LocalAlloc
RpcImpersonateClient, RpcRevertToSelf, RpcServerUnregisterIf, RpcServerUseProtseqEpW, RpcServerRegisterIfEx, NdrServerCall2


Office Source Engine by Microsoft Corporation (Signed)

Remove ose.exe
Version:   11.0.5525
MD5:   7a56cf3e3f12e8af599963b16f50fb6a
SHA1:   170290115fa1dec1b2e6f43c59996d442857db1b
SHA256:   882c82bae96d263138d4c0d6c425458b770b7b9c8e9c1d28ac918bf6be94a5c2


ose.exe runs as a service under the name Office Source Engine (ose) with extensive SYSTEM privileges (full administrator access). This is typically installed with the program WordViewer published by Microsoft Corporation. The file is digitally signed by Microsoft Corporation.


File name:ose.exe
Publisher:Microsoft Corporation
Product name:Office Source Engine
Typical file path:C:\Program Files\common files\microsoft shared\source engine\ose.exe
File version:11.0.5525
Size:87.05 KB (89,136 bytes)
Issued to:Microsoft Corporation
Authority (CA):Microsoft Corporation
Effective date:Monday, December 7, 2009
Expiration date:Monday, March 7, 2011
Digital DNA
PE subsystem:Windows GUI
File packed:No
Code language:Microsoft Visual C++
More details


The following program will install this file
Microsoft Corporation
6% remove


Runs under 'SYSTEM\CurrentControlSet\Services' by the Service Controller (services.exe)
  • 'ose' (Office Source Engine)
  • 'ose64' (Office 64 Source Engine)
  • ose64
  • 'ose'

ResourcesResource utilization

(Note: statistics below are averages based on a minimum sample size of 200 unique participants)
Total CPU:0.00341006%
Kernel CPU:0.00170503%
User CPU:0.00170503%
Kernel CPU time:16 ms/min
Private memory:488 KB
21.59 MB
Private (maximum):1.34 MB
Private (minimum):1.32 MB
Non-paged memory:488 KB
21.59 MB
Virtual memory:9.31 MB
140.96 MB
Virtual memory (peak):10.31 MB
169.69 MB
Working set:1.32 MB
18.61 MB
Working set (peak):1.34 MB
37.95 MB
Resource allocations

BehaviorsProcess properties

Integrety level:Undefined
Command line:"C:\Program Files\common files\microsoft shared\source engine\ose.exe"
Windows Service
Service name:ose
Display name:Office Source Engine
Description:“Saves installation files used for updates and repairs and is required for the downloading of Setup updates and Watson error reports.”
Parent process:services.exe (by Microsoft)

Windows OS versionsDistribution by Windows OS

OS versiondistribution
Windows 7 Home Premium 34.00%
Windows 7 Ultimate 19.00%
Microsoft Windows XP 7.50%
Windows 7 Professional 6.50%
Windows 8.1 6.00%
Windows 8.1 Pro 5.50%
Windows 8 Pro 5.00%
Windows Vista Home Premium 3.00%
Windows 8.1 Single Language 2.50%
Windows 7 Home Basic 2.00%
Windows 8 1.50%
Windows 8 Single Language 1.50%
Windows 8 Enterprise N 1.00%
Windows 8.1 Pro with Media Center 1.00%
Windows 7 Starter 1.00%
Windows 8.1 N 0.50%
Windows 8.1 Enterprise Evaluation 0.50%
Windows 8.1 Enterprise 0.50%
Windows 8 Enterprise 0.50%
Windows Vista Home Basic 0.50%
Windows 8 Pro with Media Center 0.50%
21 other Windows OS version

Distribution by countryDistribution by country

United States installs about 30.15% of Office Source Engine.

OEM distributionDistribution by PC manufacturer

PC Manufacturerdistribution
Dell 24.72%
Hewlett-Packard 15.36%
ASUS 12.73%
Lenovo 11.24%
Toshiba 10.49%
Acer 9.74%
Intel 4.49%
Compaq 3.00%
Samsung 1.87%
Sony 1.50%
American Megatrends 0.75%
NEC 0.75%
Sahara 0.37%
Alienware 0.37%
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