You have clicked on "Windows Update" that belongs to "Microsoft? Windows? Operating System" made by "Microsoft Corporation" Measures you can take regarding this program: Click this button to terminate the program. The program will be stopped and the system tray icon will disappear. Click this button to uninstall the program. The program will be removed from your computer following the proper uninstallation procedure. Click this button to remove this program from startup, so it will NOT get started every time you turn on your computer. Description extracted from Wikipedia:   Click here for more tehnical info Name Windows Update Developer Microsoft Windows Windows Update is a service provided by Microsoft that provides updates for the Microsoft Windows operating system and its installed components, including Internet Explorer. An optional feature disables access to Windows Update, enabling instead access to Microsoft Update , an expanded version of the service which provides updates not just for the operating system and Internet Explorer, but also for other Microsoft software running under Windows, such as Microsoft Office, Windows Live applications, and Microsoft Expression Studio. Updates are normally provided over an Internet connection, although there is provision for updates to be installed on computers without an Internet connection. Security updates or critical updates eliminate vulnerability to known malware and security exploits. Other updates correct errors and enhance functionality. Security updates are routinely provided on the second Tuesday of each month, Patch Tuesday, but can be provided whenever a new update is urgently required to prevent a newly discovered or prevalent exploit targeting Windows users. Windows Update can be configured to install critical updates automatically so long as the computer is connected to the Internet, without the user needing to install them manually, or even be aware that an update is required . Windows Vista, Windows Server 2008, and Windows 7 provide a Control Panel to configure update settings and check for updates. The Windows Update Control Panel is also the means to download Windows Ultimate Extras, optional software for Windows Vista Ultimate Edition. For previous versions of Microsoft Windows, updates can be downloaded from the Windows Update website, using Internet Explorer. Technical information: Click here for description Icon status Visible Icon setting Hidden when inactive Executable file C:\WINDOWS\system32\wuauclt.exe Version 7.4.7600.226 Parent process C:\WINDOWS\system32\svchost.exe Can be uninstalled No Encrypted No Size on disk 52.2 Kb Minimum recorded memory usage 2.3 Mb Average recorded memory usage 2.3 Mb Maximum recorded memory usage 2.6 Mb Date when maximum memory usage occured 21/2/2010 22:09:27 Minimum recorded CPU usage 0% Average recorded CPU usage 0% Maximum recorded CPU usage 2% Date when maximum CPU usage occured 21/2/2010 22:09:27 Started at 22/2/2010 22:47:13 Total CPU time 0 seconds Imported functions [+] Imported from KERNEL32.dll [-] Imported from KERNEL32.dll CreateFileW CreateDirectoryW GetFileAttributesW ExpandEnvironmentStringsW lstrlenW CreateProcessW VerSetConditionMask VerifyVersionInfoW OutputDebugStringW WideCharToMultiByte WriteFile FlushFileBuffers GetModuleFileNameW InterlockedIncrement InterlockedDecrement GetSystemTime GetLastError SetLastError GetFileSize CreateFileMappingW MapViewOfFile UnmapViewOfFile SetFilePointer SetEndOfFile ReleaseMutex WaitForSingleObject CreateMutexW CloseHandle UnhandledExceptionFilter GetCurrentProcess TerminateProcess GetSystemTimeAsFileTime GetCurrentProcessId GetCurrentThreadId GetTickCount QueryPerformanceCounter GetModuleHandleA SetUnhandledExceptionFilter GetStartupInfoW Sleep InterlockedExchange GetTimeZoneInformation SystemTimeToTzSpecificLocalTime GetSystemDirectoryW LoadLibraryExW GetDriveTypeW GetVolumePathNameW GetFileType GetSystemInfo GetModuleHandleW CompareStringW GetProcessHeap HeapFree HeapAlloc GetCommandLineW FreeLibrary LoadLibraryW InterlockedCompareExchange OpenEventW GetProcAddress [+] Imported from msvcrt.dll [-] Imported from msvcrt.dll _controlfp ?terminate@@YAXXZ free malloc memmove memcpy memset __set_app_type __p__fmode __p__commode __setusermatherr _amsg_exit _initterm _wcmdln exit _XcptFilter _exit _unlock _vsnwprintf __dllonexit _lock _onexit __wgetmainargs _cexit [+] Imported from ntdll.dll [-] Imported from ntdll.dll RtlUnwind [+] Imported from ole32.dll [-] Imported from ole32.dll CoTaskMemFree CoUninitialize CoCreateInstance CoInitialize CoInitializeEx [+] Imported from ADVAPI32.dll [-] Imported from ADVAPI32.dll AllocateAndInitializeSid FreeSid GetTokenInformation DuplicateTokenEx CheckTokenMembership IsValidSid CopySid RegCreateKeyExW RegSetValueExW RegQueryValueExW RegEnumValueW RegDeleteValueW GetUserNameW GetLengthSid InitializeAcl AddAccessAllowedAce InitializeSecurityDescriptor SetSecurityDescriptorDacl RegOpenKeyExW RegCloseKey [+] Imported from USER32.dll [-] Imported from USER32.dll IsWindow PostMessageW [+] Imported from OLEAUT32.dll [-] Imported from OLEAUT32.dll Imported by ordinals: 8,9 [+] Imported from SHLWAPI.dll [-] Imported from SHLWAPI.dll StrRChrW StrChrW PathIsRelativeW PathIsUNCW PathStripToRootW PathIsRootW Imported by ordinals: 176 Some relevant texts from the exe file [+] Click here for more details [-] Click here to hide details *http://update.microsoft.com/windowsupdate 0 ,http://www.microsoft.com/pki/certs/tspca.crt0 !This program cannot be run in DOS mode. wuaueng.dll /RunHandlerComServer /RunStoreAsComServer /ShowSettingsDialog /ResetAuthorization /ResetEulas /ShowWindowsUpdate /CloseWindowsUpdate /SelfUpdateManaged /SelfUpdateUnmanaged /UpdateNow /ShowWUAutoScan /ShowFeaturedUpdates /ShowFeaturedOptInDialog Failed to load %s with error %X wucltui.dll wucltux.dll call RunAUClientUI on wucltui.dll/wucltux.dll WinSqmEventEnabled wuauclt.exe is exiting with code 0x%08X Launched Client UI process wuauclt.exe launched with command line %s kernel32.dll TraceTestMain <unavailable> Global\WindowsUpdateTracingMutex WindowsUpdate.log SHGetFolderPathW shell32.dll <<|| SUBMITTED || = Module: %s = Module: <failed with %d> = Process: <failed with %d> Registering proxy/stubs. HeapSetInformation GetNativeSystemInfo IsWow64Process Wow64DisableWow64FsRedirection Wow64RevertWow64FsRedirection Failed to open Microsoft.WindowsUpdate wupdmgr.exe Failed to cocreate IShellWindows, error = 0x%08lX Window %d is NOT a WU window Done enumerating windows Quit for window %d failed: 0x%08lX Window %d is a WU window. Attempting to close Got NULL disp interface for window %d Got %d instead of VT_DISPATCH for window %d Failed to enumerate window %d, error = 0x%08lX Failed to allocate shell window array Found %d explorer windows Failed to acquire enumerator, error = 0x%08lX Failed to coinitialize, error = 0x%08lX Closing WU explorer windows PostMessage() failed, hr=%#lx WUAppNotificationWindows JustSelfUpdatedManaged JustSelfUpdatedUnmanaged WUAppAutoScan IconClickTime InteractiveResults WUAppShowInstallResults WUAppShowFeaturedUpdatesChosenUpdate WUAppSqmSessionGuid RegisterWithAU ClientApplicationID FreeLibrary GetProcAddress InterlockedCompareExchange LoadLibraryW GetCommandLineW GetProcessHeap CompareStringW GetModuleHandleW GetSystemInfo __wgetmainargs _amsg_exit __setusermatherr msvcrt.dll ?terminate@@YAXXZ __dllonexit CoUninitialize CoCreateInstance CoInitialize CoInitializeEx SetSecurityDescriptorDacl InitializeSecurityDescriptor AddAccessAllowedAce InitializeAcl GetUserNameW RegDeleteValueW RegEnumValueW RegQueryValueExW RegSetValueExW CheckTokenMembership DuplicateTokenEx GetTokenInformation AllocateAndInitializeSid ADVAPI32.dll InterlockedExchange GetStartupInfoW SetUnhandledExceptionFilter GetModuleHandleA QueryPerformanceCounter GetTickCount GetCurrentThreadId GetCurrentProcessId GetSystemTimeAsFileTime TerminateProcess GetCurrentProcess UnhandledExceptionFilter CloseHandle CreateMutexW WaitForSingleObject ReleaseMutex SetEndOfFile SetFilePointer UnmapViewOfFile MapViewOfFile CreateFileMappingW SetLastError GetLastError InterlockedDecrement InterlockedIncrement GetModuleFileNameW FlushFileBuffers WideCharToMultiByte OutputDebugStringW VerifyVersionInfoW VerSetConditionMask CreateProcessW ExpandEnvironmentStringsW GetFileAttributesW CreateDirectoryW CreateFileW GetTimeZoneInformation SystemTimeToTzSpecificLocalTime GetSystemDirectoryW LoadLibraryExW GetVolumePathNameW PostMessageW USER32.dll CoTaskMemFree OLEAUT32.dll PathIsRootW PathIsUNCW PathStripToRootW PathIsRelativeW SHLWAPI.dll <!-- Copyright (c) Microsoft Corporation --> <assemblyIdentity version=""6.0.0.0"" processorArchitecture=""x86"" name=""Microsoft.Windows.windowsupdate.wuauclt"" <windowsSettings> </windowsSettings> </application> <assemblyIdentity name=""Microsoft.Windows.Common-Controls"" publicKeyToken=""6595b64144ccf1df"" language=""*""/> <security> <requestedPrivileges> level=""asInvoker"" uiAccess=""false"" </security> </trustInfo> VS_VERSION_INFO StringFileInfo CompanyName Microsoft Corporation FileDescription Windows Update FileVersion InternalName wuauclt.exe LegalCopyright Microsoft Corporation. All rights reserved. OriginalFilename ProductName Operating System ProductVersion VarFileInfo Translation Microsoft Corporation1!0 Microsoft Root Authority0 Washington1 Microsoft Corporation1#0! Microsoft Timestamping PCA0 Microsoft Root Authority Microsoft Corporation1 Microsoft Time-Stamp Service0 Microsoft Corporation1806 /Microsoft Windows Verification Intermediate PCA0 %Microsoft Windows Component Publisher0 1999-2005 Microsoft Corporation /Microsoft Windows Verification Intermediate PCA Windows Updat Microsoft Timestamping PCA