A behind-the-scenes look at MissingWebPart errors from the "Missing server side dependencies" health analyzer rule

Recently I was helping a customer with a review of their SharePoint Server 2010 environment when I noticed a ton of “Missing server side dependencies”. Most notably were missing Web parts and even more notable was that they were OOTB Web parts. The entries were listed like this: [MissingWebPart] WebPart class [1ce3ddc9-1d7f-3ecb-b9d3-ee015154456b] is referenced [3]…

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