I am having an issue migrating AD from 2008R2 to 2016. Please help!
The environment is simple: one server 2008R2 hosted Exchange 2010, I have managed to migrate Exchange to one server 2016, after that, I started to migrate AD to another Windows2016,
I promoted the new server to domain controller, but when I transfer fsmo role from 2008 to 2016, a couple of things broke, the first one I noticed was Group policy, I can no longer access group policy as it pops up a window saying "the network name cannot be found" on both DC, and on the new DC, Netlogon and Sysvol was never created. The second thing it broke was Exchange, Outlook (connection status says disconnected, and there was a authentication error) was unable to connect to new exchange, and on OWA and ECP, the webpages reture "The Active Directory server is not available", some errors were captured in eventlog, please see the attachment.
I had to transfer the fsmo role back to the 2008 server,cause the new DC seemed not working properly, as soon as I transferred them back, everything started to work again. any suggestion here? did i miss anything when i promote the new DC? i followed the video here, but i read somewhere else that i should have prepad? https://www.youtube.com/watch?v=RCX_1A_-UZU