I patched my Exchange servers the morning this was announced, a few days ago. The patch takes about ten minutes per server, and does not require a reboot. If yo

I patched my Exchange servers the morning this was announced, a few days ago. The patch takes about ten minutes per server, and does not require a reboot. If your server was a client facing one (CAS) users would have seen a brief outage in Outlook connectivity. The patches were single file downloads, one for each version of Exchange, yes you needed to be on the latest Cumulative Update for Exchange, so if you weren't you really have no right running a production mail system...