Author Archives: ganesamoorthy s

msds-generationid not set on Windows Server 2012

msds-generationid attribute is not set for windows server 2012 virtual domain controller on vmware, if you notice when querying msds-generationid attribute value and it return blank, why attribute valve not set and blank? Any reason for this behavior? Its new feature of Active Directory 2012, which is used to restoring AD database from snapshot image,… Read More »

Forest and domain functional levels only showing “Windows Server” not showing Windows Server 2016

Once you have migrated all Domain Controllers from Windows Server 2008R2 to Windows Server 2016, if you want to raise the forest and domain functional levels from Server 2008R2 to higher version, you can only able see “Windows Server 2012/R2” and “Windows Server”? what would be “Windows Server” and why its not showing any windows version Also Check: All Supported Forest… Read More »

Why DFSR disk not showing correct free space

If you notice DFS share disk available free space across the DFSR target servers is not same, why replication partners showing different free space with same data and disk size, What does these numbers actually represent and some of the users get out of disk space message when copying data even there is no quota… Read More »

DCDIAG and Repadmin shows decommissioned domain controller

DCDIAG output return out of sync error for a decommissioned DC or repadmin /replsum (repadmin /replsummary) shows high delta value which is not pointing to any source/destination DC, then it’s quit difficult to identify the affected connection objects Domain Controller detail, will discuss how to work on this issue Also Read: Force active directory replication How to… Read More »

Windows server 2016 co-existence and migrate/upgrade scenarios with Windows server 2012 R2/2008/2003

Upgrade Active Directory Server 2016 from Windows Server 2012 R2/2008/2003: Is windows server 2016 can coexistence with windows server 2003? Can I do in-place upgrade from windows server 2003 or windows server 2008/2012 R2? Which is supported and which is not supported and how can I plan Active Directory upgrade path from my old legacy windows… Read More »

Active Directory 2016 New Features

Active Directory 2016 features on Windows Server 2016: I have already discussed the Windows Server 2016 Features where new features and a major improvement on the operating system end been listed, now want to see more specifically on Active Directory 2016 and difference between Active Director 2012 and 2016 Also Read: Windows Server 2019 Features Also… Read More »

Planning safe Decommission of Domain Controller (Decommission of Active Directory site) Without Impacting Users

Best practice for decommissioning a Domain Controller Server: In general Decommission of Domain Controller is straightforward procedure and not required a much planning as we always have a redundant Domain Controller in a same site, so the client authentication will be handled by the other DC’s, if you want to find is any application hard-coded(“hard path”… Read More »