The Session Integrator Server (Siservr.exe) service may encounter a condition in which it logs the following event message for each Session Integrator Client connection request:
Event ID: 6 Source: Session Integrator Server Description: The Session Integrator Service received a connect request from a client that did not support the Icom3270SessionClient interface (hr = 0x800706ba)
When this problem occurs, the Session Integrator Server service may use too much memory (for example, it may use 500 megabytes (MB)) when the process is viewed in Task Manager.
Cumulative update information
Microsoft Host Integration Server 2013
The fix that resolves this issue is included in cumulative update package 1 for Host Integration Server 2013. For more information about how to obtain the cumulative update package, click the following article number to view the article in the Microsoft Knowledge Base:
2908834 Cumulative Update Package 1 for Host Integration Server 2013
Microsoft Host Integration Server 2010
The fix that resolves this problem is included in Cumulative Update 9 for Host Integration Server 2010.
Microsoft Host Integration Server 2009
The fix that resolves this problem is included in Cumulative Update 6 for Host Integration Server 2009.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.