Microsoft.office.tools.excel.v4.0.utilities.dll ✦ Verified Source

| Assembly Name | Purpose | |---------------|---------| | Microsoft.Office.Interop.Excel.dll | Primary Interop Assembly (PIA) – direct COM wrappers for Excel objects. | | Microsoft.Office.Tools.Excel.dll | Base VSTO types for Excel (e.g., Worksheet , Workbook , ListObject ). | | Microsoft.Office.Tools.Excel.v4.0.Utilities.dll | – control hosting, event sink management, serialization for cached data. | | Microsoft.Office.Tools.Common.v4.0.Utilities.dll | Similar utilities for other Office apps (Word, Outlook). |

: For any Add-in using this DLL to run on a user's machine, the Visual Studio 2010 Tools for Office Runtime must be installed. Standard Location microsoft.office.tools.excel.v4.0.utilities.dll

If you are distributing an Excel add-in that depends on this DLL, follow these guidelines: | Assembly Name | Purpose | |---------------|---------| |