Issue: While installing updates for Windows 8.1 or Windows Server 2012 R2 error message may appear "The update is not applicable to your computer"
This issue occurs especially if you do not have KB2919355 installed and you want to install it to make sure you can install rest of the future updates.
Cause: March 2014 servicing stack update (KB2919442) is missing.
Resolution: Download and install KB2919442 before installing rest of the updates.
Following is the link to download it