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Active Administrator 8.4 - User Guide

Active Administrator Overview Certificates Security & Delegation Azure Active Directory  Active Directory Health
Switching to Active Directory Health Using the Active Directory Health landing page Installing Active Directory Health Analyzer agents Using the Active Directory Health Analyzer agent configuration utility Excluding domain controllers Managing the Remediation Library Analyzing Active Directory health Analyzing Azure Active Directory Managing Active Directory Health Analyzer alerts Managing alert notifications Pushing alerts to System Center Operations Manager and SNMP managers Managing monitored domain controllers Managing data collectors Active Directory Health Templates Managing Active Directory Health Analyzer agents Using the Troubleshooter Recovering Active Directory Health data
Auditing & Alerting Group Policy Active Directory Recovery Active Directory Infrastructure DC Management DNS Management Configuration
Using the Configuration landing page Managing tasks Defining role-based access Setting email server options Configuring SCOM and SNMP Settings Configuring Azure Active Directory Setting notification options Setting Active Template options Setting agent installation options Setting recovery options Setting GPO history options Setting certificate configuration Setting service monitoring policy Managing archive databases Migrating data to another database Setting a preferred domain controller Setting up workstation logon auditing Managing configuration settings Setting user options Managing the Active Directory server
Diagnostic Console Alerts Appendix
Domain controller alerts
Active Directory Certificate Services service is not running Active Directory Domain Services is not running Active Directory Web Services service is not running Consecutive replication failures DC cache hits DC DIT disk space DC DIT log file disk space DC LDAP load DC LDAP response too slow DC Memory Usage DC properties dropped DC RID pool low DC SMB connections DC SYSVOL disk space DC time sync lost Detected NO_CLIENT_SITE record DFS Replication service not running DFS service is not running DFSR conflict area disk space DFSR conflict files generated DFSRS CPU load DFSR RDC not enabled DFSR sharing violation DFSR staged file age DFSR staging area disk space DFSR USN records accepted DFSRS unresponsive DFSRS virtual memory DFSRS working set DNS Client Service is not running Domain controller CPU load Domain controller page faults Domain controller unresponsive File Replication Service is not running File replication (NTFRS) staging space free in kilobytes GC response too slow Group policy object inconsistent Hard disk drive Intersite Messaging Service is not running Invalid primary DNS domain controller address Invalid secondary DNS domain controller address KDC service is not running LSASS CPU load LSASS virtual memory LSASS working set Missing SRV DNS record for either the primary or secondary DNS server NETLOGON not shared NetLogon service is not running Orphaned group policy objects exist Review the reported orphaned GPO folders in the local SYSVOL and remove any that are obsolete. Physical memory Power supply Primary DNS resolver is not responding Secondary DNS resolver is not responding Security Accounts Manager Service is not running SRV record is not registered in DNS SYSVOL not shared W32Time service is not running Workstation Service is not running
Domain alerts Site alerts Forest alerts Azure Active Directory Connect alerts
Event Definitions PowerShell cmdlets

Naming operations master not responding

Supported on: Windows Server 2012, Windows Server 2012 R2, Windows Server 2016, and Windows Server 2019
Required permissions: Domain user privilege is required.

The Active Administrator® Foundation Service (AFS) periodically queries to find the response time of the naming operations master. If the response time is above the threshold, an alert is generated.

This alert is generated if any of the following occurs:

Active Directory® on the domain controller has failed, or is overloaded and taking too long to respond.
If the domain controller does not exist, run NTDSUTIL and select the metadata cleanup option to clean up the erroneous objects in the directory.
Check the LDAP response time for the domain controller on the Active Directory tab in the Active Directory Health module. If it is too high, you may need to add another domain controller for the same domain in the same site.

Schema operations master inconsistent

Supported on: Windows Server 2012, Windows Server 2012 R2, Windows Server 2016, and Windows Server 2019
Required permissions: Domain user privilege is required.
Description

The Active Administrator® Foundation Service (AFS) monitors the value of the schema operations master attribute on each domain controller in the forest. If the value is not the same on each domain controller, an alert is generated.

The schema operations master object (CN=&ldots;) contains an attribute called fSMORoleOwner, which contains the distinguished name of the domain controller that is allowed to originate changes to the Active Directory® schema. When an administrator attempts to modify the Active Directory schema, the directory system agent (DSA) makes sure that the fSMORoleOwner property refers to the server on which the administrator is making the change. If it does not refer to that server, the DSA will not modify the schema. The schema operations master ensures that the schema cannot become inconsistent because of conflicting changes issued from different domain controllers.

If the schema operations master is inconsistent, meaning the domain controllers have differing values for the fSMORoleOwner attribute, it is possible for administrators (or others) to issue conflicting updates to the schema, potentially causing sufficient damage to Active Directory that replication will fail. It is important to not attempt to modify the Active Directory schema when the schema operations master is inconsistent.

The schema operations master can become inconsistent due to replication failures or due to an administrator using NTDSUTIL.EXE to force the operations master to another domain controller. This can also be a transient alert if the replication latency for the schema naming context is fairly large.

Resolution

Schema operations master not responding

Indicates that the schema operations master is not responding within the configured threshold.

Data collector
Name: Schema operations master not responding
Supported on: Windows Server 2012, Windows Server 2012 R2, Windows Server 2016, and Windows Server 2019
Required permissions: Domain user privilege is required.
Description

The Active Administrator® Foundation Service (AFS) periodically queries to find the response time of the schema operations master. If the response time is above the threshold, an alert is generated.

This alert is generated if any of the following occurs:

Active Directory® on the domain controller has failed, or is overloaded and taking too long to respond.
Resolution
If the domain controller does not exist, run NTDSUTIL and select the metadata cleanup option to clean up the erroneous objects in the directory.
Check the LDAP response time for the domain controller on the Active Directory tab in the Active Directory Health module. If it is too high, you may need to add another domain controller for the same domain in the same site.

Schema version inconsistent

Supported on: Windows Server 2012, Windows Server 2012 R2, Windows Server 2016, and Windows Server 2019
Required permissions: Domain user privilege is required.
Description

The Active Administrator® Foundation Service (AFS) periodically checks the consistency of the schema version across all of the domain controllers in the forest. If any of the domain controllers has a differing value for the schema version, the alert is generated.

Resolution
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