Consider the following scenario:
You run an application that was written to use the Session Integrator feature of Microsoft Host Integration Server.
Multiple logical units that are distributed through multiple Host Integration Server servers are configured to use a certain pool.
The application tries to use a logical unit out of the pool in order to establish a session.
In this scenario, the request may fail, and you receive the following error message:
"LU Name not found" (CLU0_E_LUNOTFOUND)
This issue doesn’t occur if the logical unit out of the pool is configured on the local server on which the application is running.
This issue occurs because of an incorrect check after server enumeration.
The fix for this issue is included in cumulative update package 3 for Host Integration Server 2013. For more information about how to get the cumulative update package, see Cumulative update package 3 for Host Integration Server 2013.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.