Cannot Logon – Username/Password Incorrect Share on Facebook Post on reddit Tweet on Twitter Share on LinkedIn Home › Forums › Server Operating Systems › Windows Server 2012 / 2012 R2 › Cannot Logon – Username/Password Incorrect This topic has 0 replies, 1 voice, and was last updated 5 years, 2 months ago by robbo2389. Viewing 1 post (of 1 total) Author Posts robbo2389Member May 23, 2015 at 5:12 am #165321 Morning all, We have recently replaced our PDC for a 2012 R2 box. Our secondary DC is a 2008 R2 box. We are seeing issues randomly around the office whereby staff cannot logon to a 2008 R2 remote desktop server, It states that the username/password is incorrect, when infact, they aren’t. There doesn’t appear to be any issues with AD replication, I can see changes made to AD profiles on both servers within seconds of each other. What am I missing? Is there a security mismatch between the 2012 / 2008 boxes? KDC related? Many thanks, Rob Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic.