Upcoming Restrictions on Public Certificates

A restriction to public certificates was introduced several months ago that could affect your planning of a Microsoft Lync, Exchange, or other application service deployment. While this change restricts only public certificates that contain an internal name with an expiry date after November 2015, you should be aware of this change for planning and certificate renewal purposes.
The Change: No Public Certificates with Internal Names Allowed

Continue @  Inside Lync Blog

Lync 2013 with Office Web Apps Server

After instalation of the Office Web Apps Server and integration with Lync 2013 you might find out that Lync 2010 clients can upload and view powerpoints but Lync 2013 clients do not.

You might see this error on the Lync FE:

Syncing Office Web Apps Server with legacy presenters failed, newer clients may have lost sync for PowerPoint presentations driven by the legacy clients.
 Last attempted Url: https://WebAppsFQDN/m/present_2_0.asmx

Microsoft documentation says you need to install these:

Add-WindowsFeature Web-Server,Web-Mgmt-Tools,Web-Mgmt-Console,Web-WebServer,Web-Common-Http,Web-Default-Doc,Web-Static-Content,Web-Performance,Web-Stat-Compression,Web-Dyn-Compression,Web-Security,Web-Filtering,Web-Windows-Auth,Web-App-Dev,Web-Net-Ext45,Web-Asp-Net45,Web-ISAPI-Ext,Web-ISAPI-Filter,Web-Includes,InkandHandwritingServices

But there's a few features missing for this to work

Add-WindowsFeature NET-Framework-Features, NET-Framework-Core, NET-HTTP-Activation, NET-Non-HTTP-Activ, NET-WCF-HTTP-Activation45

Add this ones, restart the Office Web Apps service and everything should be working now! 

Lync Server 2013 Preview Resource Links

You can find this information on Next Hop blog

Active Directory Replication Status Tool: The AD Utility We've All Been Waiting For (Almost)

Excelent!

ADREPLSTATUS is Microsoft's first new replication management tool in twelve years

Continue reading @ http://www.windowsitpro.com/article/active-directory/adreplstatus-143901

Office Communications Server 2007 R2 Updates Now Available: April 2012

More information here:
http://blogs.technet.com/b/nexthop/archive/2012/04/16/office-communications-server-2007-r2-updates-now-available-april-2012.aspx