So today I ran into a small issue.. I noticed that it seems that computer tombstoning is not happening as I have multiple computer objects with lastLogonTimestamps of 2012...
In pursuing further I discovered that I don't have the AD Recycle Bin because we're still running at a Forest Functional Level of 2003. Gotta fix that! Except WHOA.. we use DFS and it's stuck at a 2000 mode.
I go looking and Microsoft graciously did not craft an upgrade for DFS, so it looks like the only way to upgrade my forest level and keep a functioning DFS is to upgrade them both.
Raising the forest functional level is easy and fast.
Open the Active Directory Administrative Center
Right-Click on your domain
Choose raise your Forest functional level
Easy peasey.
Now 'upgrading' your DFS mode take a little more work.
First you're going to want to backup your existing DFS configuration, run the following from one of your domain controllers:
dfsutil root export \\<domain.fqdn>\<Namespace> %temp%\namespace_backup.xml
Next you are going to remove your old namespace.. open your DFS Management snap-in and remove your namespace servers. That's it.
Now in this step you will be creating a 'new' namespace however you will keep the original names. If your original namespace was "consoso.com\Public" then create the new one using that name. Except during the creation make sure the box for 2008-mode is checked. Also it hurts nothing to leave the DFS Share from the default "C:\%systemroot%\DFSRoots"
Make sure you add all the same namespace servers you had before as well..
Lastly you will import your old config via:
dfsutil root import merge %temp%\namespace_backup.xml \\<domain.fqdn>\<Namespace>
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