Should I block it?

No, this file is 100% safe to run.

VersionsAdditional versions

19.1.18.0.0 6.80%
19.1.18.0.0 0.97%
19.0.55.0.0 8.74%
19.0.55.0.0 3.88%
19.0.53.0.0 12.62%
18.2.51.0.0 18.45%
18.2.51.0.0 9.71%
18.2.47.0.0 6.80%
18.1.49.0.0 5.83%
18.1.49.0.0 0.97%
18.0.55.0.0 6.80%
18.0.55.0.0 6.80%
17.2.56.0 3.88%
17.2.56.0 6.80%
17.1.51.0 0.97%

Relationships

PE structurePE file structure
Show functions
Import table
advapi32.dll
RegDeleteValueW, RegCreateKeyExW, RegSetValueExW, RegOpenKeyExW, RegEnumKeyExW, RegQueryInfoKeyW, RegCloseKey, RegDeleteKeyW, RegQueryValueExW
kernel32.dll
FindResourceW, LoadLibraryExW, GetModuleFileNameW, InitializeCriticalSection, DeleteCriticalSection, InterlockedDecrement, InterlockedIncrement, GlobalLock, GlobalUnlock, lstrcpynW, lstrcpynA, WideCharToMultiByte, DeleteFileW, LockResource, FindResourceExW, FileTimeToSystemTime, CreateFileW, GetFileTime, SystemTimeToTzSpecificLocalTime, LoadResource, GetTimeFormatW, GetFileSize, CloseHandle, GetThreadLocale, SetThreadLocale, EnterCriticalSection, LeaveCriticalSection, GetUserDefaultUILanguage, GetLocaleInfoW, LoadLibraryW, SetFilePointer, ReadFile, FileTimeToLocalFileTime, SystemTimeToFileTime, GetSystemTimeAsFileTime, GetCurrentProcessId, GetCurrentThreadId, GetTickCount, SizeofResource, MultiByteToWideChar, GetLastError, RaiseException, lstrcmpiW, GetModuleHandleW, GetProcAddress, lstrlenW, GetDateFormatW, FreeLibrary, QueryPerformanceCounter, IsDebuggerPresent, SetUnhandledExceptionFilter, UnhandledExceptionFilter, GetCurrentProcess, TerminateProcess, InterlockedCompareExchange, Sleep, InterlockedExchange, GetProcessHeap, HeapSize, HeapReAlloc, HeapFree, HeapAlloc, HeapDestroy, GetVersionExA, GetLocaleInfoA, GetACP, InitializeCriticalSectionAndSpinCount, DecodePointer, EncodePointer, LocalFree
msvcp100.dll
DllMain
msvcp80.dll
DllMain
msvcp90.dll
DllMain
msvcr100.dll
DllMain
msvcr80.dll
DllMain
msvcr90.dll
DllMain
ole32.dll
CoTaskMemFree, CoTaskMemRealloc, CLSIDFromString, StringFromCLSID, CoTaskMemAlloc, ReleaseStgMedium, CoCreateInstance, OleRun, StringFromGUID2
rpcrt4.dll
NdrDllRegisterProxy, CStdStubBuffer_CountRefs, NdrCStdStubBuffer_Release, IUnknown_Release_Proxy, CStdStubBuffer_DebugServerQueryInterface, CStdStubBuffer_QueryInterface, IUnknown_AddRef_Proxy, NdrDllGetClassObject, NdrDllUnregisterProxy, CStdStubBuffer_DebugServerRelease, CStdStubBuffer_Disconnect, CStdStubBuffer_IsIIDSupported, CStdStubBuffer_Invoke, CStdStubBuffer_Connect, NdrOleAllocate, NdrOleFree, IUnknown_QueryInterface_Proxy, CStdStubBuffer_AddRef, NdrDllCanUnloadNow
shell32.dll
SHGetMalloc, DragQueryFileW
shlwapi.dll
PathFindExtensionW, PathIsDirectoryW, StrFormatByteSizeW
user32.dll
CharNextW, InsertMenuW, SetMenuItemBitmaps, LoadBitmapW, UnregisterClassA
Export table
DllCanUnloadNow
DllGetClassObject
DllRegisterServer
DllUnregisterServer

AcShellExtension.dll

AutoCAD by Autodesk (Signed)

Remove AcShellExtension.dll
Version:   18.2.51.0.0
MD5:   fce624106461a961374f0d4befdac78c
SHA1:   409d9017415e557fddebd3ab0973d75c16390f55
SHA256:   bd6ae5f264c5a4c0e28125f816c28c83613c367f272c56ef6d78e2e88f23c48d

What is AcShellExtension.dll?

AutoCAD Dwg common shell extension handler is part of Autodesk's AutoCAD, a software application for computer-aided design (CAD) and drafting that supports both 2D and 3D design formats. AutoCAD is used in a range of industries, employed by architects, project managers and engineers, amongst other professions.

About AcShellExtension.dll (from Autodesk)

“Design and shape the world around you with the powerful, flexible features found in AutoCAD software, one of the world’s leading design applications. AutoCAD software is a world-leading design and doc”

DetailsDetails

File name:acshellextension.dll
Publisher:Autodesk
Product name:AutoCAD
Description:AutoCAD Dwg common shell extension handler
Typical file path:C:\Program Files\common files\autodesk shared\acshellex\acshellextension.dll
File version:18.2.51.0.0
Size:128.72 KB (131,808 bytes)
Certificate
Issued to:Autodesk
Authority (CA):VeriSign
Effective date:Thursday, August 27, 2009
Expiration date:Friday, September 21, 2012
Digital DNA
File packed:No
Code language:Microsoft Visual C# / Basic .NET
.NET CLR:Yes
.NET NGENed:No
More details

BehaviorsBehaviors

Context menu handlers
Located in '*\shellex\ContextMenuHandlers'
  • Name: 'AcShellExtension.AcContextMenuHandler'
Approved shell extensions
Located in the registry at 'SOFTWARE\Microsoft\Windows\CurrentVersion\Shell Extensions\Approved'
  • 'AutoCAD DWG Column Handler' with CLSID {8A0BC933-7552-42E2-A228-3BE055777227}
  • 'AutoCAD DWG InfoTip Handler' with CLSID {5800AD5B-72C1-477B-9A08-CA112DF06D97}

Windows OS versionsDistribution by Windows OS

OS versiondistribution
Windows 7 Ultimate 28.16%
Windows 7 Home Premium 26.21%
Microsoft Windows XP 11.65%
Windows 7 Professional 10.68%
Windows 8 Single Language 3.88%
Windows 7 Home Basic 3.88%
Windows 8.1 Single Language 2.91%
Windows 8 2.91%
Windows 7 Enterprise 2.91%
Windows 8 Pro with Media Center 2.91%
Windows Vista Ultimate 1.94%
Windows 8 Pro 0.97%
Windows Vista Business 0.97%

Distribution by countryDistribution by country

United States installs about 33.98% of AutoCAD.

OEM distributionDistribution by PC manufacturer

PC Manufacturerdistribution
ASUS 20.93%
Hewlett-Packard 18.60%
Acer 17.44%
Lenovo 13.95%
Sony 6.98%
Intel 6.98%
Toshiba 6.98%
Dell 4.65%
American Megatrends 3.49%
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