TF86002: Team Foundation was unable to initialize the Office Add-in. This may be caused by a Team Foundation Client installation ...

TF86002: Team Foundation was unable to initialize the Office Add-in.

This may be caused by a Team Foundation Client installation problem or lack of .NET Programmability Support in the Office Application.

To resolve this issue, first check that the Office Primary Interop Assemblies (PIA) are installed as described in the following Microsoft website:

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If this does not resolve the problem, then try reinstalling the Team Foundation client.