This is a Windows system installed file with Windows File Protection (WFP) enabled.
There are 47 versions of oledb32.dll in the wild, the latest version being 2.82.3959.0 (srv03_sp2_rtm.070216-1710). The average file size is about 482.98 KB. Numerous variations of oledb32.dll have been installed with both Microsoft SQL Server 2000 PivotTable Services and Microsoft Office 2000 SR-1 Premium.
OLE DB Core Services for Microsoft Data Access Components (MDAC) is a set of software components that are used to provide applications a means to access data from various data storage sources, with a focus on access to Microsoft SQL Server.
(Note, the programs listed below are for all versions of Microsoft Data Access Components.)
(Note, the behaviors below are for all versions of oledb32.dll, select a unique version for details.)
Located in the registry at 'SOFTWARE\Microsoft\Windows\CurrentVersion\Shell Extensions\Approved'
United States installs about 33.89% of Microsoft Data Access Components.