atl.dll - Necessary

%sysdir%\atl.dll

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Description:

%sysdir%\atl.dll
atl.dll is a Active Template Library (ATL) module, a set of template-based C++ classes.
atl.dll is used for easily creating small, fast Component Object Model (COM) objects.
atl.dll is a part of Microsoft® Windows® Operating System.
Manufacturer: Microsoft Corp.
www.microsoft.com