• Error "Cannot open Mailbox" when attempting to open an Exchange 2007 mailbox from Exchange 2010

    The scenario is that you are logged into a Exchange 2010 mailbox and want to access a shared calendar or mailbox on Exchange 2007. When attempting to open the mailbox, you may receive the following error/ (full call stack below): Request Url...
  • Troubleshooting EWS requests using IIS logs with Logparser

    The problem: We have very valuable data inside of the IIS logs that can greatly assist in troubleshooting Exchange Web Service clients. The problem is that all of the data exists in one field (cs-uri-query) inside of the IIS logs. An example cs...
  • The server to which the application is connected cannot impersonate the requested user due to insufficient permission.

    PROBLEM: When running The Transporter for either Lotus Notes or IMAP migrations you may encounter the following error: Summary: 1 item(s). 0 succeeded, 1 failed. Elapsed time: 00:01:00 email@address.com Failed Error: Migration does not happen...
  • Microsoft Exchange Transport Log Search service will not start and a series of 4999 events are logged

    Problem On Exchange 2010, you may notice the below event firing rapidly. In our scenerio we were seeing the service attempt to start and go down approximatly 420 times an hour, logging the below 4999 every time. The only action that was taken prior...
  • The request failed with HTTP status 401: Unauthorized \ Could not retrieve e12 webservice url

    PROBLEM: When attempting to migrate a user with move-dominomailbox using the Transporter for Lotus Notes for Exchange 2007, you may receive the following error: The request failed with HTTP status 401: Unauthorized Could not retrieve e12 webservice...