Should I block it?

No, this file is 100% safe to run.

VersionsAdditional versions 7.87% 3.94% 2.36% 0.79% 1.57% 41.73% 18.11% 23.62%


PE structurePE file structure

Show functions
Import table
CertGetNameStringW, CertCompareIntegerBlob, CryptHashCertificate, CryptMsgClose, CertCloseStore, CertFindCertificateInStore, CryptMsgGetParam, CryptQueryObject, CertGetEnhancedKeyUsage, CertNameToStrW, CertFreeCertificateContext
GetCurrentProcess, SizeofResource, LockResource, LoadResource, FindResourceW, FindResourceExW, LocalAlloc, FormatMessageW, ExpandEnvironmentStringsW, OpenProcess, GetExitCodeProcess, WaitForSingleObject, WideCharToMultiByte, MultiByteToWideChar, InterlockedIncrement, InterlockedDecrement, lstrlenA, CopyFileW, MoveFileW, WaitForMultipleObjects, SetEvent, GetModuleHandleW, WTSGetActiveConsoleSessionId, GetCurrentProcessId, CreateProcessW, DisableThreadLibraryCalls, DeleteFileW, SetFileAttributesW, CreateEventA, GetLocalTime, GetSystemDefaultLangID, InitializeCriticalSection, DeleteCriticalSection, EnterCriticalSection, LeaveCriticalSection, GetSystemTimeAsFileTime, HeapFree, GetProcessHeap, HeapAlloc, GetTempPathW, FindClose, FindNextFileW, FindFirstFileW, CreateDirectoryW, RemoveDirectoryW, InterlockedExchange, GetCurrentThread, MoveFileExW, DeviceIoControl, SetLastError, Process32NextW, Process32FirstW, CreateToolhelp32Snapshot, LoadLibraryW, Sleep, GetTickCount, ProcessIdToSessionId, GetTempFileNameW, CancelWaitableTimer, SetWaitableTimer, CreateWaitableTimerW, GetFileSizeEx, CreateMutexW, ReleaseMutex, CreateEventW, SystemTimeToTzSpecificLocalTime, GetTimeZoneInformation, GetSystemInfo, FreeLibrary, GetVersionExW, GetLocaleInfoW, SetFilePointerEx, LocalFree, WriteFile, LCMapStringW, CompareStringW, FlushFileBuffers, GetFileInformationByHandle, ResetEvent, ReleaseSemaphore, CreateSemaphoreW, InterlockedExchangeAdd, GetProcAddress, lstrlenW, LoadLibraryExW, OutputDebugStringW, GetModuleFileNameW, GetLastError, GetFileAttributesW, FormatMessageA, CreateWaitableTimerA, SystemTimeToFileTime, ResumeThread, TlsSetValue, OpenEventA, TlsGetValue, TlsFree, TlsAlloc, lstrcmpW, lstrcmpA, QueryDosDeviceW, GetLongPathNameW, ReadProcessMemory, VirtualQuery, GetCurrentThreadId, QueryPerformanceCounter, IsProcessorFeaturePresent, IsDebuggerPresent, SetUnhandledExceptionFilter, UnhandledExceptionFilter, TerminateProcess, InterlockedCompareExchange, DecodePointer, EncodePointer, InitializeCriticalSectionAndSpinCount, HeapSize, HeapReAlloc, HeapDestroy, RaiseException, LoadLibraryA, SetEndOfFile, GlobalFree, CreateFileW, GetFileSize, ReadFile, IsWow64Process, CloseHandle
CoSetProxyBlanket, StringFromIID, CoInitializeSecurity, CoCreateGuid, CoCreateInstance, CoTaskMemFree, StringFromGUID2, IIDFromString, CoUninitialize, CoInitializeEx
GetPerformanceInfo, GetModuleFileNameExW
CharNextW, CharNextA, wsprintfW, TranslateMessage, DispatchMessageW, PeekMessageW
WinHttpQueryDataAvailable, WinHttpReadData, WinHttpGetProxyForUrl, WinHttpSetCredentials, WinHttpCloseHandle, WinHttpReceiveResponse, WinHttpQueryHeaders, WinHttpWriteData, WinHttpAddRequestHeaders, WinHttpSetStatusCallback, WinHttpCrackUrl, WinHttpSendRequest, WinHttpOpenRequest, WinHttpOpen, WinHttpSetOption, WinHttpConnect, WinHttpQueryOption
CryptCATAdminCalcHashFromFileHandle, CryptCATAdminEnumCatalogFromHash, CryptCATAdminReleaseContext, CryptCATAdminReleaseCatalogContext, WinVerifyTrust, WintrustGetRegPolicyFlags, CryptCATCatalogInfoFromContext, CryptCATAdminAcquireContext
Export table


Oxygen Client by Symantec Corporation (Signed)

Remove mclntask.dll
MD5:   b7b42fe536e6346e8226f91b12ec1cbf
SHA1:   3c15f9873f4316aebc820ab069e2d79a32832fe4
SHA256:   45995a38d85c90fb110f025225ca69617172e635a671fb6f80df078629224f10


mclntask.dll is loaded as dynamic link library that runs in the context of a process. It is installed with a couple of know programs including Norton Internet Security published by Symantec Corporation, Norton Security Suite from Symantec Corporation and Norton Security Suite by Symantec Corporation. The file is digitally signed by Symantec Corporation which was issued by the VeriSign certificate authority (CA).


File name:mclntask.dll
Publisher:Symantec Corporation
Product name:Oxygen Client
Description:Change this file description
Typical file path:C:\Program Files\norton internet security\engine\\mclntask.dll
Original name:Change this original file name
File version:
Product version:4.4
Size:1.28 MB (1,337,136 bytes)
Build date:5/29/2013 7:09 PM
Issued to:Symantec Corporation
Authority (CA):VeriSign
Effective date:Monday, August 9, 2010
Digital DNA
PE subsystem:Windows GUI
File packed:No
Code language:Microsoft Visual C++ 10.0
More details


The following programs will install this file
Symantec Corporation
3% remove
Norton Internet Security, developed by Symantec Corporation, is a computer program that provides malware prevention and removal during subscription period and uses signatures and heuristics to identify viruses. Other features include a personal firewall, email spam filtering, and phishing protection. Symantec distributes the product as a download, a boxed copy, and as OEM software.
Symantec Corporation
50% remove
Powered by Norton 360 Technology. XFINITY Internet customers can now get the #1 ranked Norton Security Suite at no additional charge. Protects against viruses, spyware, Trojan horses, worms, bots, and rootkits. Blocks browser, OS, and application threats; protects against infected Web sites. Blocks phishing Web sites and authenticates trusted sites. Available at no extra cost to XFINITY Internet customers, Norton Security Suite protects...
Symantec Corporation
12% remove
Norton 360, developed by Symantec, is marketed as an "all-in-one" computer security suite. The package includes an antivirus, a personal firewall, a phishing protection program and a backup program. What distinguishes this suite from Norton Internet Security is the inclusion of file backup and PC maintenance capabilities.
Symantec Corporation
1% remove
Basic antivirus protection that stops viruses and spyware, so you can safely go online and share. Five patented layers of protection quickly and accurately detect and eliminate viruses and spyware. Protects your privacy and prevents your passwords and identity from being stolen when you surf the Web. Deep clean your PC – our powerful Threat-Removal Layer targets and scrubs out aggressive, hard-to-remove infections that less sophisticate...
Symantec Corporation
3% remove
Norton 360, developed by Symantec, is marketed as an "all-in-one" computer security suite. The package includes an antivirus, a personal firewall, a phishing protection program and a backup program. What distinguishes this suite from Norton Internet Security is the inclusion of file backup and PC maintenance capabilities. The Premier Edition has all the functions of the standard edition, with the difference that it comes with 25 GB of o...

Windows OS versionsDistribution by Windows OS

OS versiondistribution
Windows 7 Home Premium 34.13%
Windows 8 20.63%
Windows 8 Pro 8.73%
Windows Vista Home Premium 7.94%
Microsoft Windows XP 7.14%
Windows 7 Ultimate 5.56%
Windows 8.1 4.76%
Windows 7 Professional 3.17%
Windows 8.1 Pro 2.38%
Windows 8 Enterprise 1.59%
Windows Se7en Titan 0.79%
Windows Developer Preview 0.79%
Windows 8 Single Language 0.79%
Windows 8 Pro with Media Center 0.79%
Windows 7 Home Basic 0.79%

Distribution by countryDistribution by country

United States installs about 66.13% of Oxygen Client.

OEM distributionDistribution by PC manufacturer

PC Manufacturerdistribution
Hewlett-Packard 25.95%
Toshiba 22.78%
Dell 15.19%
Acer 13.29%
ASUS 8.86%
Sony 2.53%
Intel 2.53%
MSI 1.27%
American Megatrends 1.27%
Lenovo 1.27%
Samsung 0.63%
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