The server encountered an internal error (Invalid userid) that prevented it from fulfilling this request

Error Message

The ArcWeb server throws the following error when a REST v2006 userID is used with REST v2006.1:"The server encountered an internal error (Invalid userid) that prevented it from fulfilling this request."

Cause

REST v2006 requests are automatically redirected to REST v2006.1, which is incompatible with v2006 userIDs.

Solution or Workaround