Sharepoint server get all Updates except share point Updates

Question

hi
I have a sharepoint server that sharepoint 2013 has installed on that .my Update server is sccm 2012 r2 and I checked all office 2003,2007,2010,2013 product to be synchronized .every thing is good sccm work fine in synchronizing update with Microsoft.and the
share point server OS gets Updates finely .But the Problem is here that share point service doesn't get any updates .all updates deployed to OS except share Point updates.
whats the solution ?
thanx

Answer 1

I checked those files .but there weren't any errors .I checked them through reporting but it still says that those
Updates are not required whereas the server doesn't installed any share point Updates.
http://support2.microsoft.com/kb/2767999
A change in the package configuration was introduced after SharePoint Server 2013 was released. You must install this public update before you install later SharePoint updates.
Note This update is available only from the Download Center and is currently not available from Microsoft Update.
https://www.microsoft.com/en-us/download/details.aspx?id=36989
Due to a change in the package configuration introduced after SharePoint 2013 RTM the March Public update is a mandatory requirement in order to install subsequent SharePoint Updates.
Don
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thanks for reply 
But before I've got another share point server 2013 and wsus server (not sccm) .that was ok with all Updates .
I didnt do any thing special in that case.like installing some hotfixes or anything else.