Event pre-filtering causes high vCenter Database load

Challenge The vCenter Database utilizes most of the available CPU, impacting vCenter Server performance. Stopping nworks Collectors brings the CPU usage back to normal. The nworks vmspi log shows the following errors: VCEVT+ VC250 retrieveEvents: createFilter failed, System.Net.WebException: The...

The user has not been granted the requested logon type on this computer

Challenge Although the nWorks service account has local administrator rights and is a member of the nWorks Enterprise Manager Accounts local group, nWorks Collector and Enterprise Manager cannot be installed, because the installer does not accept the specified service account. The following error...

No connection could be made because the target machine actively refused it

Article Applicability This article specifically concerns a communication issue between Veeam Management Pack for Microsoft System Center components. The core error message, "No connection could be made because the target machine actively refused it" is a generic error that occurs anytime a...

Installing nworks Report Pack for HP Reporter on Windows Server 2008 (64-bit)

Challenge When installing the nworks Report Pack for HP Reporter on Windows 2008 x64, you may get the following error: OpenView Reporter or Reporter Lite not found! while Reporter is actually installed and running. Cause This happens because the nworks installer is unable to locate the registry k...

Incorrect hardware status returned from vCenter 5 when collected through vSphere API

Challenge When nworks uses "Refresh Hardware" calls, hardware status is not updated on vSphere 5 Cause vSphere 5 does not update the hardware status data available through API - this can be verified in vSphere Managed Objects Browser, which shows an outdated status, while the host MOB will show t...

Monitoring of standalone hosts fails

Challenge No topology is created for standalone ESX/ESXi hosts. nworks logs contain the following errors: 0.0017 EXCOL+ VP120 retrieveHostProperties failed, buildMorList: zero count at nworksCore.Collectors.VimUtil.buildMorListList1 nodes at...

Cluster does not appear in nworks Enterprise Manager Web UI due to unsupported naming

Challenge When a name of a cluster contains unsupported characters, the following error can occur in the Enterprise Manager log server.txt file: INFO IMon Error: System.ArgumentException: An item with the same key has already been added. at System.ThrowHelper.ThrowArgumentExceptionExceptionResour...

"Object reference not set to an instance of an object" error when connecting a VMware vSphere 5 server

Challenge When you connect a VMware vSphere 5 server in the Connected VMware Servers section of the nworks Enterprise Manager Web UI, the following error occurs: Object reference not set to an instance of an object Cause Support of VMware vSphere 5 was introduced in nworks 5.7. Earlier versions o...

Conflict with SCOM/antivirus software

Challenge After installation, no Veeam Management Pack for Microsoft System Center discoveries take place within 5 hours. The Operations Manager Event Log does not show events 999, 1010, 1012, 1011. Cause Antivirus software can prevent the agent from working properly. Solution Check the following...

Performance metrics are not updated when a virtual machine is powered off

Challenge Sometimes SCOM can be showing irrelevant performance graphs for powered off VMs: Cause This is an expected behavior for the current version of nworks. When a virtual machine is powered off, WMI cache still contains outdated data. That is why graphs in SCOM are updated improperly. The...

VM Right-Sizing report fails with error "Query execution failed for dataset ‘AnalysisDS’"

Challenge VM Right-Sizing report fails with the following error: Query execution failed for dataset 'AnalysisDS'. Error converting data type varchar to numeric. Cause The error occurs because of unsupported decimal separator format on the Collector machine. A dot . is expected as the decimal...

How to disable monitoring of Virtual Machines with nworks MP

Purpose In some environments, there is no need to monitor certain or any virtual machines. With nworks MP, it is possible to: - Disable discovery of all virtual machines, and - Disable discovery of specific virtual machines workaround available since 5.6. Solution Disable discovery of virtual...

Best Practice For Setting Up nWorks Collection for Failover and Disaster Recovery

Purpose Additional information given about how collectors work within nWorks and guidelines on how to set up collectors for disaster situations. Solution The Best Practice for Setting Up nWorks Collection for Failover and Disaster Recovery To get started with monitoring through the nWorks...

How To Refine nWorks Data Collection in SCOM

How To Refine nWorks Data Collection in SCOM...

"The given key was not present in the dictionary" error while opening nworks UI

"The given key was not present in the dictionary" error while opening nworks UI...

The "Index was outside the bounds of the array" error while opening nworks UI

When the error "Index was outside the bounds of the array" occurs when opening nworks UI, this article provides the steps to address the corrupted XML file...

"Object reference not set to an instance of an object" error while opening nworks UI

Error "Object reference not set to an instance of an object" occurs when opening nworks UI...

nworks UI cannot be displayed, error "Cannot load scripts-main.js"

This article provides troubleshooting tips for the error "Cannot load scripts/main.js" within nworks UI...

Empty sockets counter in nworks Enterprise Manager

VMware vCenter or hosts have been added into Enterprise Manager and the amount of sockets is displayed correctly; however, once the maintenance procedure has been performed against the hosts and the hosts are restarted, then some of the hosts become unlicensed Enterprise Manager shows "0" instead...

Physical and virtual machines with identical names

Challenge When a physical and a virtual object with identical names are present in SCOM and in the SCOM database they tend to get mixed up by the application. Cause Unfortunately, nworks currently does not support machines having the same name within one environment. nworks uses VM Name as a uniq...