Ihave an SBS 2011 server. Lately i made updates, specifically service pack 3 for exchange and the latest rollup. Since then, users cannot login to owa, they receive “wrong username or password ” error, They cannot cannot connect their computer remotely through rpc over http. In the organisation all work fine and smart phones sync perfectly. By what i have checked, the IIS permission seems right. Does anyone have any idea how can i fix that?