Office Web Apps 2013 - Rebuild your Farm in a few Easy Steps!

Office Web Apps 2013 - Rebuild your Farm in a few Easy Steps!

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Because there is minimal configuration overhead (from an Office Web Apps perspective) and zero data loss, there is little risk to rebuilding a farm.  These steps can be a legitimate part of an action plan for resolving technical issues with Office Web Apps. 

1. Take farm offline (if there is a load balancer)

2. Collect the current Farm information via Powershell (on WAC Server): 

Get-OfficeWebAppsFarm > c:\MyWACfarm.txt

3. (If multi-server farm) use Powershell (on WAC Servers) to remove each child machine from the farm, then remove the parent machine.  This will delete the farm.


4. Reboot the Office Web Apps server(s).

5. Recreate the farm via Powershell (on WAC Server) using (if appropriate) the parameter values from "MyWACfarm.txt".

New-OfficeWebAppsFarm -InternalURL "" -AllowHttp -EditingEnabled -OpenFromURLEnabled

6. Reunite the children with their parent via Powershell (on WAC Server).  Run this from each child server: 

New-OfficeWebAppsMachine -MachineToJoin <ParentServer>

7. Bring farm back online.

Note: You may want to rebuild the bindings via SharePoint Powershell (on SharePoint Server):

Remove-SPWOPIBinding –All:$true
New-SPWOPIBinding –ServerName “” -AllowHttp

Note: Anything above in Red you need to replace with the correct information from your farm.

Useful Resource:

Configure Office Web Apps for SharePoint 2013

  • Hi Tom, is it possible to use a wildcard certificate when publishing externally over https? we have one for our SharePoint 2013 farm eg * and I want to use the same certificate for our office web apps server - eg.

  • Hi Chet. Wildcard certificates are not supported with Office Web Apps Server. Please see the following: •The FQDN in the SAN field can’t begin with an asterisk (*).

  • I use wildcard cert with no issues at all!

  • Boblar can you share a little more on your certificate configuration, we would like to do the same.

  • Brilliant. After hours of hunting articles and trying them to no avail, this worked for me. However, Microsoft SharePoint developers and managers have a lot to answer for. SharePoint is so unstable I find I spend more than half my time fixing things that should work. This is really really really baaaaddddd!

  • Boblar - How did you get the wildcard cert to work? Every time I try to setup the farm using * power shell tells me that it was "unable to find the specified certificate".

    This is the command I'm running:

    New-OfficeWebAppsFarm -InternalUrl "" -ExternalUrl "" -EditingEnabled -CertificateName *

    The certificate is installed properly but power shell refuses to see it.

  • Wayne, you need to specify the 'friendly name' of the certificate after -certificatename

  • I have tried several friendly names and even the first part of my domain name and powershell still refuses to see it!! How hard can this be?? I am trying to install on a 2 node with MS NLB but can't even create the farm

  • You can manually specify a friendly name on a Wildcard cert by going into its properties via MMC.

  • the first thing to be done is friendly name specification immediately after the certificate name

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