I am setting up my Office Web Apps 2013 server on Windows Server 2012 R2.

According Deploy Office Web Apps Server, I installed

  • .NET Framework (but installer said the equivalent or later version is already installed)
  • Windows Features suggested

Then I start installing Office Web Apps, but it fails with error message that require me to install .Net Framework 4.5.

Any help will be appreciated.


2 Answers 2


If you have .NET 4.6 installed, uninstall it and re-install .NET 4.5. Then try the WAC install again. You can upgrade to .NET 4.6 afterwards.

  • I need to install .NET 4.5.2 BEFORE installing .NET 4.6 and even running windows update.
    – user48851
    Feb 9, 2016 at 2:36

Install is blocked until removal the update for Microsoft Windows (KB3102467) and restarting the server...

Control Panel > Programs > Programs and Features > Installed Updates > search for KB3102467 > click uninstall

Also, the only documentation I found was from an exchange team blog to repair the 4.5.2 installation after the uninstall of 4.6.1. You will need the offline version of 4.5.2 in order to repair...


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.