Skype for Business Hotfix – The update is not applicable to your computer

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If you receive the following message during the installation of Skype for Business, you will need to resolve this requirement.

“Prerequisite not satisfied: Before you install Skype for Business Server 2015, you must Install an update for Windows Server 2012 R2. For details about the update, see Microsoft Knowledge Base article 2982006, IIS crashes occasionally when a request is sent to a default document in Windows 8.1 or Windows Server 2012 R2”

Download the hotfix here.

If you receive the following error when running this hotfix, the may be some prerequisites required specifically to install this hotfix:

“Windows Update Standalone Installer: The update is not applicable to your computer”

Windows Update may even show that your server is already up to date, but you’re still likely to have to install these manually. You can confirm a missing prerequisite using the Windows Event Viewer e.g:

“Windows update could not be installed because of error 2149842967 when running the file KB2982006-x64.msu”

Looking at this in a comical way: To install Skype for Business you must install KB2982006, but to install KB2982006 you require KB2919355, and to install KB2919355 you need KB2919442. Each time you try to install a prerequisite without its own prerequisite being met, you will receive the very helpful error “The update is not applicable to your computer”.

So to ensure smooth sailing, install things in the following order:

  1. KB2919442
  2. KB2919355
  3. KB2982006

Happy installing!