There have been several times I’ve attempted to install Failover Clustering Tools on a server and received the following error: “Object reference not set to an instance of an object”

Here are the steps I’ve taken in the past to correct this:

1. Open PowerShell with “Run as Administrator”
2. Run this command:
   
   Install-WindowsFeature -Name Failover-Clustering –IncludeManagementTools

   1	Install-WindowsFeature -Name Failover-Clustering –IncludeManagementTools

3. Reboot

Additional instructions can be found here.