During the deployment of a cumulative update within a site that contains load-balanced Client Access server or Database Availability Group members there will be a period where servers are not at exactly the same version.
Although this is expected and supported, it is not supported to stay in that state for a long period of time.
Moving your website to a new host can be a daunting and stressful experience, but it doesn’t need to be.
Many people are faced with the need to move to a new host because of problems with their current provider and have just had enough.
As of the writing of this article the most recent firmware release is from April 2013 (CU8 or 4.0.7577.4387).
Understand that although Microsoft officially supports Lync Phone Edition with Lync Server 2013 starting with this CU7 release it is often still possible to register directly to Lync Server 2013 environments with many older firmware versions.
In the case of Office 365, note that external sharing may be switched off, in which case links will not work.
The very first step of any project such as this is to back up every aspect of your site.
Note that the redirect target server must be provided as a fully qualified domain name.
Redirect-Message -Server E15MB1 -Target E15MB2.exchange2013Confirm Are you sure you want to perform this action? ] Help (default is "Y"): y Exchange MVP Michael Van Horenbeeck has published a script for automating the process of starting and stopping maintenance mode.
Microsoft continues to release semi-quarterly Cumulative Updates of firmware for the various LPE models.
In the round of releases in December 2012 and January 2013 (aka CU7) official support for Lync Server 2013 was added, as well dropping the ‘2010’ from the previous name of .