error: An unknown error occurred during the request. - when selecting Commit Multiple Batches Global Change

When selecting Commit Multiple Batches in CRM version 3.0, users receive the error:
"error: An unknown error occurred during the request. This could indicate a request to an invalid endpoint or a problem with the web server configuration" in both WebShell and Click Once.
Download and install the latest patch, which contains all fixes from previous patches. If you are running an older version, download and install the latest version and then the patch. 

Environment

 3.0.516 SP patch 34
 3.0.516, Service Pack 7

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