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Unable to deploy workflow from K2 Studio or P&D after K2 5.1 upgrade

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.
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After upgrading to K2 5.1 from K2 4.7, K2 Studio workflows are not deployable. An error is raised when deployment is done from K2 Studio as well as when deployment is done from Package and Deployment:

“SmartObject Server Exception: Execution Timeout Expired. The timeout period elapsed prior to completion of the operation or the server is not responding.. SmartObject: [Process Process Instances]”


Deployment of any workflow raises the time-out error.  This can also be tested by creating a new simple workflow and replicating the same behaviour making any deployment from K2 Studio end in failure. This is also occurs for deployment from P&D  where deployment fails with a time-out error.


This can be resolved by installing Fix Pack 23 and later.