I wanted to block an update from deploying the other day and didn't see a button/option to say DECLINE / DONT DEPLOY within the Configuration Manager Console. I saw the update had been downloaded already, but had not been deployed. So I wanted to make sure it would not get deployed at all. I had to go into the WSUS server and decline the Update these and then re-synch the sccm database.
Quick DECLINE or STOP / BLOCK button would be nice. Or an UNINSTALL/REMOVE button.