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

KB ID: 1352
Version: 5.6
Published: 2012-06-18
Last Modified: 2020-08-13


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.ThrowArgumentException(ExceptionResource resource)
at System.Collections.Generic.Dictionary`2.Insert(TKey key, TValue value, Boolean add)
at System.Collections.Generic.Dictionary`2.Add(TKey key, TValue value)
at Veeam.LicenseServer.InfrastructureMonitor.createDictionary(ClusterInfo[] state)
at Veeam.LicenseServer.InfrastructureMonitor.queryChanges()
at Veeam.LicenseServer.InfrastructureMonitor.go(Object data)

As a result, the cluster will not appear in nworks Enterprise Manager Web UI.


nworks 5.6 does not support brackets in names of clusters.


Remove brackets from the cluster name, or upgrade to nworks 5.7.

More information

If you have any questions or problems, please contact Veeam Support at
KB ID: 1352
Version: 5.6
Published: 2012-06-18
Last Modified: 2020-08-13

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