Event Manager X

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3. Event Manager X Mac
4. Event Manager X

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This guide helps you troubleshoot issues that Operations Manager agents have problem connecting to the management server in System Center 2012 Operations Manager (OpsMgr 2012) and later versions.

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To learn more about Operations Manager agent and how they communicate with management servers, see Agents and Communication Between Agents and Management Servers.

Original product version: System Center 2012 Operations Manager
Original KB number: 10066

Check the Health Service

Whenever you experience connectivity problems in Operations Manager, first make sure that the Health Service is running without errors on both the client agent and the management server.To determine whether the service is running, follow these steps:

1. Press the Windows key+R.

2. In the Run box, type services.msc and press Enter.

3. Find the Microsoft Monitoring Agent service, and then double-click it to open the Properties page.

   Note

   In System Center 2012 Operations Manager, the service name is System Center Management.

4. Make sure that the Startup type is set to Automatic.

5. Check whether Started is displayed in Service status. Otherwise, click Start.

Check antivirus exclusions

If the Health Service is up and running, the next thing is to confirm that antivirus exclusions are properly configured. For the latest information about recommended antivirus exclusions for Operations Manager, see Recommendations for antivirus exclusions that relate to Operations Manager).

Check network issues

In Operations Manager, the agent computer must be able to successfully connect to TCP port 5723 on the management server. If this is failing, you will likely receive event ID 21016 and 21006 on the client agent.

In addition to TCP port 5723, the following ports must be enabled:

• TCP and UDP port 389 for LDAP
• TCP and UDP port 88 for Kerberos authentication
• TCP and UDP port 53 for Domain Name Service (DNS)

Additionally, you must ensure that RPC communications complete successfully over the network. Problems with RPC communication usually manifest themselves when pushing an agent from the management server. RPC communication problems usually cause the client push to fail with an error similar to the following:

The Operation Manager Server failed to perform specified operation on computer agent1.contoso.com.

Operation: Agent Install
Install account: contosoAgent_action
Error Code: 800706BA
Error Description: The RPC server is unavailable

This error typically occurs when either non-standard ephemeral ports are used or when the ephemeral ports are blocked by a firewall. For example, if non-standard high range RPC ports have been configured, a network trace will show a successful connection to RPC port 135 followed by a connection attempt using a non-standard RPC port such as 15595. The following is an example:

18748 MS Agent TCP TCP: Flags=CE....S., SrcPort=52457, DstPort=15595, PayloadLen=0, Seq=1704157139, Ack=0, Win=8192
18750 MS Agent TCP TCP:[SynReTransmit #18748] Flags=CE....S., SrcPort=52457, DstPort=15595, PayloadLen=0, Seq=1704157139, Ack=0,
18751 MS Agent TCP TCP:[SynReTransmit #18748] Flags=......S., SrcPort=52457, DstPort=15595, PayloadLen=0, Seq=1704157139, Ack=0, Win=8192

In this example, since the port exemption for this non-standard range wasn't configured on the firewall, the packets are dropped and the connection fails.

In Windows Vista and later versions, the RPC high range ports are 49152-65535 so that's what we want to look for. To verify whether this is your issue, run the following command to see what RPC high port range is configured:

According to IANA standards, the output should look like this:

Protocol tcp Dynamic Port Range
---------------------------------
Start Port : 49152
Number of Ports : 16384

If you see a different Start Port, the problem may be that the firewall isn't configured correctly to allow traffic through these ports. You can change the configuration on the firewall or run the following command to set the high range ports back to their default values:

You can also configure the RPC dynamic port range through the registry. For more information, see How to configure RPC dynamic port allocation to work with firewalls.

If everything seems to be configured correctly and you still experience the error, it may be caused by one of the following conditions:

1. DCOM has been restricted to a certain port. To verify, run dcomcnfg.exe, go to My Computer > Properties > Default Protocols, ensure that there is no custom setting.

2. WMI is configured to use a custom endpoint. To check if you have a static endpoint configured for WMI, run dcomcnfg.exe, go to My Computer > DCOM Config > Windows Management and Instrumentation > Properties > Endpoints, ensure that there is no custom setting.

3. The agent computer is running the Exchange Server 2010 Client Access server role. The Exchange Server 2010 Client Access service changes the port range to 6005 through 65535. The range was expanded to provide sufficient scaling for large deployments. Don't change these port values without fully understanding the consequences.

For more information about port and firewall requirements, see Firewalls. You can also find the minimum required network connectivity speeds in the same article.

Event Manager X For Mac

Note

Troubleshooting network problems is an extremely large issue, so it's best to consult a networking engineer if you suspect that an underlying network problem is causing your agent connectivity issues in Operations Manager. We also have some basic, generalized network troubleshooting information available from our Windows Directory Services support team available at Troubleshooting networks without NetMon.

Check certificate issues on the gateway server

Operations Manager requires that mutual authentication be performed between client agents and management servers prior to the exchange of information between them. To secure the authentication process, the process is encrypted. When the agent and the management server reside in the same Active Directory domain, or in Active Directory domains that have established trust relationships, they make use of the Kerberos v5 authentication mechanisms provided by Active Directory. When the agents and management servers do not lie within the same trust boundary, other mechanisms must be used to satisfy the secure mutual authentication requirement.

In Operations Manager, this is accomplished through the use of X.509 certificates issued for each computer. If there are many agent-monitored computers, this can result in high administrative overhead for managing all those certificates. In addition, if there is a firewall between the agents and management servers, multiple authorized endpoints must be defined and maintained in the firewall rules to allow communication between them.

To reduce the administrative overhead, Operations Manager has an optional server role called the Gateway Server. Gateway servers are located within the trust boundary of the client agents and can participate in the mandatory mutual authentication. Because gateways lie within the same trust boundary as the agents, the Kerberos v5 protocol for Active Directory is used between the agents and the gateway server, and each agent then communicates only with the gateway servers that it is aware of.

The gateway servers then communicate with the management servers on behalf of the clients. To support the mandatory secure mutual authentication between the gateway server and the management servers, certificates must be issued and installed but only for the gateway and management servers. This reduces the number of certificates required. In the case of an intervening firewall, it also reduces the number of authorized endpoints that need to be defined in the firewall rules.

The takeaway here is that if the client agents and management servers don't lie within the same trust boundary, or if a gateway server is used, the necessary certificates must be installed and configured correctly for agent connectivity to function properly. Here are some key things to check:

• Confirm that the gateway certificate exists in Local Computer > Personal > Certificates on the management server to which the gateway or agent is connecting.

• Confirm that the root certificate exists in Local Computer > Trusted Root Certification Authorities > Certificates on the management server to which the gateway or agent is connecting.

• Confirm that the root certificate exists in Local Computer > Trusted Root Certification Authorities > Certificates on the gateway server.

• Confirm that the gateway certificate exists in Local Computer > Personal > Certificates on the gateway server. Confirm that the gateway certificate exists in Local Computer > Operations Manager > Certificates on the gateway server.

• Confirm that registry value HKEY_LOCAL_MACHINESOFTWAREMicrosoftMicrosoft Operations Manager3.0Machine SettingsChannelCertificateSerialNumber exists and has the value of the certificate (from the Local Computer/Personal/Certificates folder within the details in the Serial number field) reversed within it on the gateway server.

• Confirm that registry value HKEY_LOCAL_MACHINESOFTWAREMicrosoftMicrosoft Operations Manager3.0Machine SettingsChannelCertificateSerialNumber exists and has the value of the certificate (from the Local Computer/Personal/Certificates folder within the details in the Serial number field) reversed within it on the management server to which the gateway or agent is connecting.

You might receive the following event IDs in the Operations Manager event log when there is an issue with certificates:

• 20050
• 20057
• 20066
• 20068
• 20069
• 20072
• 20077
• 21007
• 21021
• 21002
• 21036

For details on how certificate-based authentication functions in Operations Manager, as well as instructions on how to obtain and configure the proper certificates, see Authentication and Data Encryption for Windows Computers.

Check for a disjointed namespace on the client agent

A disjoint namespace occurs when the client computer has a primary DNS suffix that doesn't match the DNS name of the Active Directory domain that the client belongs to. For example, a client that uses a primary DNS suffix of corp.contoso.com in an Active Directory domain that's named na.corp.contoso.com is using a disjoint namespace.

When the client agent or the management server has a disjointed namespace, Kerberos authentication can fail. Though this is an Active Directory issue and not an Operations Manager issue, it does affect agent connectivity.

For more information, see Disjoint Namespace.

To resolve the issue, use one of the following methods:

Method 1

Manually create the appropriate Service Principal Names (SPNs) for the affected computer accounts and include the host SPN for the fully qualified domain name (FQDN) together with the disjointed name suffix (HOST/machine.disjointed_name_suffix.local). Also update the DnsHostName attribute for the computer to reflect the disjointed name (machine.disjointed_name_suffix.local) and enable registration for the attribute in a valid DNS zone on the DNS servers that Active Directory uses.

Method 2

Correct the disjointed namespace. To do this, change the namespace in the affected computer's properties to reflect the FQDN of the domain to which the computer belongs. Make sure that you are fully aware of the consequences of doing this before making any changes in your environment. For more information, see Transition from a Disjoint Namespace to a Contiguous Namespace.

Check for a slow network connection

If the client agent is running across a slow network connection, it may encounter connectivity issues due to the fact that there is a hard-coded timeout for authentication. To resolve this issue, install System Center 2012 Operations Manager SP1 Update Rollup 8 (assuming you're not already on System Center 2012 R2 Operations Manager), and then manually change the timeout value.

The UR8 update increases the server timeout to 20 seconds and the client timeout to 5 minutes.

For more information, see Update Rollup 8 for System Center 2012 Operations Manager Service Pack 1.

Note

This issue can also occur when there are time synchronization issues between the client agent and the management server.

Check for OpsMgr Connector problems

If everything else checks out, check the Operations Manager event log for any error events generated by the OpsMgr Connector. Common causes and resolutions for various OpsMgr Connector events are listed below.

Event ID 21006 and 21016 appear on the client agent

Examples of these events:

Source: OpsMgr Connector
Date: Time
Event ID: 21006
Task Category: None
Level: Error
Keywords: Classic
User: N/A
Computer: <ComputerName>
Description: The OpsMgr Connector could not connect to <ManagementServer>:5723. The error code is 10060L (A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.). Please verify there is network connectivity, the server is running and has registered its listening port, and there are no firewalls blocking traffic to the destination.

Log Name: Operations Manager
Source: OpsMgr Connector
Date: Time
Event ID: 21016
Task Category: None
Level: Error
Keywords: Classic
User: N/A
Computer: <ComputerName>
Description: OpsMgr was unable to set up a communications channel to <ManagementServer> and there are no failover hosts. Communication will resume when <ManagementServer> is available and communication from this computer is allowed.

Usually these event IDs are generated because the agent hasn't received configuration. After a new agent is added and before it is configured, this event is common. Event 1210 in the agent's Operations Manager event log indicates that the agent received and applied configuration. You receive this event after communication is established.

You can use the following steps to troubleshoot this issue:

1. If auto-approval for manually installed agents isn't enabled, confirm that the agent is approved.

2. Ensure that the following ports are enabled for communication:

   • 5723 and TCP and UDP port 389 for LDAP.
   • TCP and UDP port 88 for Kerberos authentication.
   • TCP and UDP port 53 for DNS server.

3. This event can potentially indicate that Kerberos authentication is failing. Check for Kerberos errors in the Event Logs and troubleshoot.

4. Check if the DNS suffix has an incorrect domain. For example, the computer is joined to contoso1.com but the primary DNS suffix is set to contoso2.com.

5. Make sure the default domain name registry keys are correct. To verify, make sure that the following registry keys match your domain name:

   • HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindows NTCurrentVersionWinlogonDefaultDomainName
   • HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesTcpipParametersDomain

6. A duplicate SPN for the Health Service can also cause event ID 21016. To find the duplicate SPN, run the following command:

   If duplicate SPNs are registered, you must remove the SPN for the account that is not being used for the management server Health Service.

Event ID 20057 appears on the management server

An example of this event:

Log Name: Operations Manager
Source: OpsMgr Connector
Date: time
Event ID: 20057
Task Category: None
Level: Error
Keywords: Classic
User: N/A
Computer: <ComputerName>
Description:Failed to initialize security context for target MSOMHSvc/******The error returned is 0x80090311(No authority could be contacted for authentication.). This error can apply to either the Kerberos or the SChannel package.

Event IDs 21006, 21016 and 20057 are usually caused by firewalls or network problems that are preventing communication over the required ports. To troubleshoot this issue, check the firewalls between the client agent and the management server. The following ports must be open to enable correct authentication and communication:

• TCP and UDP port 389 for LDAP.
• TCP and UDP port 88 for Kerberos authentication.

Event ID 2010 and 2003 appear on the client agent

Examples of these events:

Log Name: Operations Manager
Source: HealthService
Date: data
Event ID: 2010
Task Category: Health Service
Level: Error
Keywords: Classic
User: N/A
Computer: <ComputerName>
Description: The Health Service cannot connect to Active Directory to retrieve management group policy. The error is Unspecified error (0x80004005)
Event Xml:
<Event xmlns='http://schemas.microsoft.com/win/2004/08/events/event'>
<System>
<Provider Name='HealthService' />
<EventID Qualifiers='49152'>2010/<EventID>
<Level>2</Level>
<Task>1</Task>
<Keywords>0x80000000000000</Keywords>
<TimeCreated SystemTime='2015-02-21T21:06:04.000000000Z' />
<EventRecordID>84143</EventRecordID>
<Channel>Operations Manager</Channel>
<Computer>ComputerName</Computer>
<Security />
</System>
<EventData>
<Data>Unspecified error</Data>
<Data>0x80004005</Data>
</EventData>
</Event>

Log Name: Operations Manager
Source: HealthService
Date: time
Event ID: 2003
Task Category: Health Service
Level: Information
Keywords: Classic
User: N/A
Computer: <ComputerName>
Description: No management groups were started. This may either be because no management groups are currently configured or a configured management group failed to start. The Health Service will wait for policy from Active Directory configuring a management group to run.
Event Xml:
<Event xmlns='http://schemas.microsoft.com/win/2004/08/events/event'>
<System>
<Provider Name='HealthService' />
<EventID Qualifiers='16384'>2003/<EventID>
<Level>4</Level>
<Task>1</Task>
<Keywords>0x80000000000000</Keywords>
<TimeCreated SystemTime='2015-02-21T21:06:04.000000000Z' />
<EventRecordID>84156</EventRecordID>
<Channel>Operations Manager</Channel>
<Computer>ComputerName</Computer>
<Security />
</System>
<EventData>
</EventData>
</Event>

If the agent is using Active Directory assignment, the event logs will also indicate a problem communicating with Active Directory.

If you see these event logs, confirm that the client agent can access Active Directory. Check firewalls, name resolution and general network connectivity.

Event ID 20070 combined with Event ID 21016

Examples of these events:

Log Name: Operations Manager
Source: OpsMgr Connector
Date: 6/13/2014 10:13:39 PM
Event ID: 21016
Task Category: None
Level: Error
Keywords: Classic
User: N/A
Computer: <ComputerName>
Description:
OpsMgr was unable to set up a communications channel to <ComputerName> and there are no failover hosts. Communication will resume when <ComputerName> is available and communication from this computer is allowed.

Log Name: Operations Manager
Source: OpsMgr Connector
Date: 6/13/2014 10:13:37 PM
Event ID: 20070
Task Category: None
Level: Error
Keywords: Classic
User: N/A
Computer: <ComputerName>
Description:
The OpsMgr Connector connected to <ComputerName>, but the connection was closed immediately after authentication occurred. The most likely cause of this error is that the agent is not authorized to communicate with the server, or the server has not received configuration. Check the event log on the server for the presence of 20000 events, indicating that agents which are not approved are attempting to connect.

When you see these events, it indicates that authentication occurred but then the connection was closed. This usually occurs because the agent hasn't been configured. To verify this, check whether event ID 20000 A device which is not part of this management group has attempted to access this health service is received on the management server.

These event logs can also occur if client agents are stuck in a Pending status and not visible in the console.

To verify, run the following command to check whether the agents are listed for manual approval:

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If so, you can resolve this by running the following command to manually approve the agents:

Event Manager X Mac

Event ID 21023 appears on the client agent, while Event ID 29120, 29181 and 21024 appear on the management server

Some examples of these events are included below.

Log Name: Operations Manager
Source: OpsMgr Connector
Event ID: 21023
Task Category: None
Level: Information
Keywords: Classic
User: N/A
Computer: <ComputerName>
Description:
OpsMgr has no configuration for management group <GroupName> and is requesting new configuration from the Configuration Service.

Log Name: Operations Manager
Source: OpsMgr Management Configuration
Event ID: 29120
Task Category: None
Level: Warning
Keywords: Classic
User: N/A
Computer: <ComputerName>
Description:
OpsMgr Management Configuration Service failed to process configuration request (Xml configuration file or management pack request) due to the following exception

Log Name: Operations Manager
Source: OpsMgr Management Configuration
Event ID: 29181
Task Category: None
Level: Error
Keywords: Classic
User: N/A
Computer: <ComputerName>
Description:
OpsMgr Management Configuration Service failed to execute 'GetNextWorkItem' engine work item due to the following exception

Log Name: Operations Manager
Source: OpsMgr Management Configuration
Event ID: 29181
Task Category: None
Level: Error
Keywords: Classic
User: N/A
Computer: <ComputerName>
Description:
OpsMgr Management Configuration Service failed to execute 'LocalHealthServiceDirtyNotification' engine work item due to the following exception

Log Name: Operations Manager
Source: OpsMgr Management Configuration
Event ID: 21024
Task Category: None
Level: Information
Keywords: Classic
User: N/A
Computer: <ComputerName>
Description:
OpsMgr's configuration may be out-of-date for management group <GroupName>, and has requested updated configuration from the Configuration Service. The current(out-of-date) state cookie is '5dae4442500c9d3f8f7a883e83851994,906af60d48ed417fb1860b23ed67dd71:001662A3'

Log Name: Operations Manager
Source: OpsMgr Connector
Event ID: 29181
Task Category: None
Level: Error
Keywords: Classic
User: N/A
Computer: <ComputerName>
Description:
OpsMgr Management Configuration Service failed to execute 'DeltaSynchronization' engine work item due to the following exception

These events can occur when the delta synchronization process cannot build configuration within its configured timeout window of 30 seconds. This can occur when there is a large instance space.

To resolve this issue, increase the timeout on all management servers. To do this use one of the following methods:

Event Manager X

Method 1

1. Make a backup copy of the following file:

   Drive:Program FilesSystem Center 2012Operations ManagerServerConfigService.Config

2. Increase the timeout values in ConfigService.config with the following changes:

   Locate <OperationTimeout DefaultTimeoutSeconds='30'>, change 30 to 300.
   Locate <Operation Name='GetEntityChangeDeltaList' TimeoutSeconds='180' />, change 180 to 300.

3. Restart the Configuration service.

In most cases, this should allow enough time for the synchronization process to complete.

Method 2

1. Install Update Rollup 3 or later for System Center 2012 R2 Operations Manager.

2. Add the following registry value on the server that's running System Center 2012 R2 Operations Manager to configure the timeout:

   • Registry subkey: HKEY_LOCAL_MACHINESoftwareMicrosoft Operations Manager3.0Config Service
   • DWORD name: CommandTimeoutSeconds
   • DWORD value: nn

   Note

   The default value for the placeholder nn is 30 seconds. You can change this value to control the timeout for delta synchronization.

Other OpsMgr Connector event IDs

Other OpsMgr Connector error events and the corresponding troubleshooting suggestions are listed below: