Restarting active directory domain services

#Restarting active directory domain services install#
#Restarting active directory domain services manual#
#Restarting active directory domain services software#
#Restarting active directory domain services windows#

It can also provide you with a good view of replication partners for each DC, and allows you to run a check against an entire domain for replication errors. ReplMon, short for Replication Monitor, is essential in your arsenal of tools for detecting replication errors within a domain. The output from some of these tools is fairly long, and for brevityвЂ™s sake, we will focus on only the relevant parts. Although the usage of these programs can also be described as part of an AD health check, in this case, we will focus on a single DC.

#Restarting active directory domain services windows#

The Windows 2003 support tools (found on your installation CD under the SUPPORT folder) and the Windows 2003 resource kit tools (found at ) provide a variety of tools to verify if the DC is still operational, if there is actually a problem, and where the problem lies. When you have checked that all other DCs replicate just fine, you should check the Event log for specific event IDs (4), that only occur when you have a real database corruption, and the AD jet database, which AD uses, is unreadable. The other utility, DCDiag, scans every DC, and determines if and why they have replication and other errors. It shows which DCs are not replicating and why. Although ReplMon is a graphical utility, it is pretty small, and one of the best tool for checking whether or not there are replication errors within an entire domain.

#Restarting active directory domain services install#

If you can safely rule out those causes, you can use utilities such as ReplMon and DCDiag, which are included in the Windows 2003 support tools, available free from MicrosoftвЂ™s website or on your install CD. These are more often than not the main causes, and not an actual corruption. Also, ensure that it is not a network-related problem-this means that no routers and routes have been changed, or firewalls re-configured, and the connection is not down.

#Restarting active directory domain services manual#

A good starting point is to check again that the DNS is in order, and revert any manual changes that may have been made recently. If the AD on a domain controller becomes corrupted, or stops replicating to other DCвЂ™s, or both, find out the root cause for this. What follows is a complete outline of what to do during each part of the solution process.

Once the recovery is complete, you will need to verify whether the DC is replicating and functioning properly.

You will then have to perform a specific directory restore mode recovery, where you have to decide between an authoritative and a non-authoritative mode.

You will have to verify that it is, in fact, a failure or corruption within the AD database, and not a network-related problem or other problem.

An accidental or malicious change in the AD schema with low level tools such as ADSIedit or something similar.

A replication that has been interrupted.

#Restarting active directory domain services software#

A software glitch, which can due to upgrading the schema, but having customized schema entries.

Another symptom could be that the AD services donвЂ™t start on the DC. This becomes apparent when replication fails for some reason, or a large amount of specific event log errors appear. The database gets corrupted and the DC is no longer able to process and authenticate or perform directory lookups. LetвЂ™s take a look at the symptoms and then the causes. In addition, this article outlines, symptoms, causes, and solutions for this scenario. In this article by Florian Rommel, we will look at the different options and approaches available to recover a DC that has a database corruption. WhatвЂ™s worse, though, is that several times, the replication keeps going so that the corrupted database spreads out to the other DCs. Essentially, it renders the domain controller (DC) useless. This will prevent logon and authentication as well as any directory-dependent services. Simply put, it means that the directory service can no longer read the Active Directory database that it has locally. Active Directory (AD) failure, which includes corruption, is something that is dreaded by any administrator.