I'd like to update a few proofing languages I am using to SP1 (only EN, FR, ES are available at install time). So I have Office 2013 SP1 installed, I downloaded and installed the proofing languages from MS (which are the SP0 versions). Then I try running: Service Pack 1 for Microsoft Office Proofing Tools 2013 (KB2817435) It says it doesn't apply to my system (?). I extracted the installer and then manually ran the MSP for the respective languages - and voila they installed (can see them in Add/Remove). Not sure what's going on here, ideas? Thanks.