It's time for a classic with a twist.
As we know there is an issue installing Skype for Business server on windows server 2012R2. You have to download the KB2982006 update and installed it.
Here the other day, I was doing the things I need to do when to install Skype for Business server.
Run the prereq command. Windows update, Used the hotfix KB2982006 and got this error
After this I googled around and tried a lot of tricks but nothing worked.
Then I found this brilliant blogg who needs some cred.
This saved my day and fixed my problem.