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Wednesday, April 25, 2012

SharePoint 2010 Web Services and Anonymous Access

Looks like SharePoint 2010 still has issues with Anonymous Access and its web services.
There are a fwe articles out there pointing at this issue in 2007 but I'm afraid its no better in 2010 (SharePoint 15?).

This article (Trinkit HQ) is short and sweet, and gets right to the point. Basically if your Web Application has Anonymous Access turned on, you will experience the 'Attempted to perform an unauthorized operation' error.

There are a few ways to deal with it, extend another web app, muck around with IIS (not recommended) but the bottom line is:
Anonymous Access = No Web Services

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