Sometimes it is necessary to exclude some updates from automatically distribute to clients.
When using Automatic Deployment Rule (ADR) in sccm 2012, all updates that meet the criteria that was configured will added to the associated software updates group, and will be eventually distribute to clients.
Exclude updates from ADR
Find the desire ADR, under Software Library node go to Software Updates -> Automatic Update Rules.
In the ADR properties, go to Software Updates tab and add a Title with - (minus) and the name of the update you would like to exclude.