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Unable to start the K2 service - "Keyword not supported" error

This article was created in response to a support issue logged with K2. The content may include typographical errors and may be revised at any time without notice. This article is not considered official documentation for K2 software and is provided "as is" with no warranties.
This article has been archived, and/or refers to legacy products, components or features. The content in this article is offered "as is" and will no longer be updated. Archived content is provided for reference purposes only. This content does not infer that the product, component or feature is supported, or that the product, component or feature will continue to function as described herein.


When starting the K2 service in console mode, an error appears and the service cannot be started. 



From the K2 Host Server logs, the following error is logged:

"ServerStartError","SourceCode.Hosting.Server.Runtime.HostServerEngine.StartHostServer","2001 Error Starting Host Server: Keyword not supported: '[hostserverconnectionstring];pooling'

Troubleshooting Steps

Should the issue persists after performing a re-configuraton on K2 Blackpearl, kindly follow these steps: 

1. Download a new copy of the 4.6.11 installation package from our K2 Partner & Customer Portal.
2. Run the Blackpearl setup manager and perform a Repair.