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Important This document may not represent best practices for current development, links to downloads and other resources may no longer be valid. Current recommended version can be found here.

PidTagProviderDllName Canonical Property

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Contains the base file name of the MAPI service provider dynamic-link library (DLL).

Associated properties:




Data type:



MAPI common

MAPI uses a DLL file naming convention. The base filename contains up to six characters that uniquely identify the DLL. MAPI appends the string 32 to the base DLL name to identify the version that runs on 32-bit platforms. For example, when the name MAPI.DLL is specified, MAPI constructs the name MAPI32.DLL to represent the corresponding 32-bit version of the DLL.

These properties should specify the base name. MAPI appends the string 32 as appropriate. Including the string 32 as part of this property results in an error.

Header Files


Provides data type definitions.


Contains definitions of properties listed as alternate names.

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