Office Web Apps Server 2013

• KB 2760486 - Description of the Office Web Apps Server 2013 hotfix package (Wacserver-x-none.msp): March 5, 2013
• KB 2799821 - Description of the Office Web Apps Server 2013 hotfix package (Wacserver-x-none.msp): April 9, 2013
• KB 2817350 - Office Web Apps Server 2013 June 2013
• KB 2817521 - Office Web Apps Server 2013 hotfix package (Wacserver-x-none.msp): August 13, 2013
• KB 2825686 - Office Web Apps Server 2013 October 2013 CU
• KB 2850013 - Office Web Apps Server 2013 December 2013 CU
• KB 2880558  - Office Web Apps Server 2013 SP1

co authoring excel sharepoint 2010 / SharePoint 2013

TechNet article provides guidance for administrators to configure co-authoring for their organization. Many of these are using Windows PowerShell cmdlets.

• Configure versioning for co-authoring (SharePoint Server 2010) - When multiple authors work on the same document, edits are retained on the server as document versions. This article describes how to configure document library versioning settings for co-authoring.
• Configure the co-authoring versioning period (SharePoint Server 2010) - When versioning is turned on, SharePoint Server takes periodic snapshots of documents, saving them for later reference. This article describes how to configure the co-authoring versioning period.
• Configure the maximum number of co-authoring authors (SharePoint Server 2010) - Administrators can limit the maximum number of authors that can co-author a document at the same time. This article describes how to configure the maximum number of co-authoring authors
• Disable co-authoring (SharePoint Server 2010) - Co-authoring can also be disabled on the client side using Group Policy. This article describes how to disable co-authoring