SCOM Agent Install Issue: Failure of operating system version verification.

I was trying to install SCOM  2012 R2 agent from the console on a couple of our remote DR servers,
However we received the following error message every time we tried the install.

"The operations manager server cannot process the install/uninstall request for computer. Failure of operating system version verification."

As checked RDP  and  Ping worked fine, There was no firewall issue as it was disabled.
Permissions for Agent account were correct.

However when we tried to access the \\server\C$ it failed.

It turned out WAN optimization  software was blocking CIFS access
As soon as we made changes to allow CIFS access , SCOM agent installation worked fine.


Hope this helps.