Domain Functional Level Krbtgt

Ensure you change the krbtgt account password for every domain in your forest.

Domain functional level krbtgt. Changing the krbtgt password is only supported by microsoft once the domain functional level is windows server 2008 or greater. It is a good idea to know that during the process of raising the domain functional level dfl of your active directory structure from 2003 the krbtgt account password gets changed. Changing the krbtgt password is only supported by microsoft once the domain functional level is windows server 2008 or greater. Don t leave an attacker any backdoors.

In this case a restart of the kdc service on the domain controller will trigger an in memory refresh of the new krbtgt password and resolve related. Some technet articles have stated that the krbtgt password is periodically changed but that is not true. Check proper replication of the krbtgt password. Yes you have to technically reset it twice to protect the domain if someone steals the hash for krbtgt account but you have to do it in steps and make sure that all writable domain controllers in that domain get the first reset before you do the 2 nd reset otherwise the replication will break.

This is likely due to the fact that the krbtgt password changes as part of the dfl update to. Configure encryption types allowed for kerberos is currently set to not defined. Authentication errors may occur on a domain controller after the domain functional level is raised to windows server 2008 or higher if the domain controller has already replicated the dfl change but has not yet refreshed the krbtgt password. Best way to do this is to watch metadata for the krbtgt account and monitor the version for.

You can set the domain functional level to a value that is higher than the forest functional level but you cannot set the domain functional level to a value that is lower than the forest functional level. So when you raise the domain functional level to windows server 2008 or windows server 2008 r2 from windows server 2003 or gasp windows 2000 the krbtgt password will be changed. When you raise the functional level of the domain for example from windows server 2012 r2 to windows server 2016 the password of the krbtgt account changes automatically. Krbtgt password changes as part of the dfl update to 2008 to support kerberos aes encryption so it has been tested when changing the krbtgt account password make certain you use a solid password.

That said i checked where i believe this is governed in our default domain policy s and the setting for network security. You can change the krbtgt password as for any regular user through the aduc snap in reset password or you can use a ready powershell script. Mit dem ende der lebensdauer von windows server 2003 2008 und 2008 r2 müssen diese domänencontrollern dcs auf windows server 2012 2012 r2 2016 bzw. Obviously in this case we re looking for domain controllers that are replication a change from 2 to 3.