Office Web Apps Server – KB2592525 Installation failed

I’ve recently updated our company’s internal SharePoint 2010 portal to SharePoint 2013. One difference is that web apps is now a separate installation on another machine. The installation is straight forward and documented on Technet . However, there was on tricky issue. KB2592525 is a prerequisite and the PS New-OfficeWebAppsFarm cmdlet checks if the KB2592525 is installed. I was installing on a Windows Server 2008 R2 SP1 with all the actual patches but KB2592525  was not installed and the KB2592525 installer refused to install on this machine. One way to get around this issue is to force the update using pkgmgr.

  1. Download KB2592525  to folder on your system
  2. Create a new folder called “files”
  3. Extract the MSU: expand Windows6.1-KB2592525-x64.msu –F:* .\files
  4. go to files
  5. Install using Pkgmgr: pkgmgr /ip /m:Windows6.1-KB2592525-x64.cab

That’s it, and the New-OfficeWebAppsFarm cmdlet will accept this workaround.