Hi All, 

We have a requirement to set up Office Web Apps 2013 server on SharePoint Server 2013 environment.  
However, a couple of web applications MUST NOT use Office Web Apps 2013 as that department using Office Web Apps 2013. 

How can we scope OWA 2013 to a specific web application? 

Any help would be greatly appreciated. 

Thank you!  

Hi Sandy 791,

From your description, you want to disable Office Web Apps 2013 to specific web applications only.

You can not disable it for one web application. However you can program using PowerShell to disable it for each site collection in a specific web application and this has to be done each time when you add a site collection.

To deactivate the Office Web Apps Feature on a single site collection by using Windows PowerShell:

$webAppsFeatureId = $(Get-SPFeature -limit all | where {$_.displayname -eq "OfficeWebApps"}).Id 
$singleSiteCollection = Get-SPSite -Identity http://<site_name> 
Disable-SPFeature $webAppsFeatureId -Url $singleSiteCollection.URL

https://technet.microsoft.com/en-us/library/ee837418(v=office.14).aspx#bkmk_deactiv_single

Besides, similar issue post for your reference:

https://social.technet.microsoft.com/Forums/office/en-US/ae95eff5-93d2-450b-bb21-5ba1aef73535/disable-office-web-apps-on-web-application?forum=sharepointadmin

Best Regards,

Lisa Chen

One thing you can do is disable Office Web Apps Edit functionality on a per-Web Application basis by leveraging User Licensing. Simply do not add the OfficeWebAppsEdit license to the Web Application license mapping.

This will not disable WAC Viewing, however.