Symptoms
You have an application that uses the Common Programming Interface for Communications (CPI-C) programming interface in a Microsoft Host Integration Server 2010 environment. When you run the application, you may receive an exception message that resembles the following:
0xc0000008 - An invalid HANDLE was specified.
Cause
This issue may occur when you try to implement a Cancel_Conversation call (function name cmcanc) to cancel outstanding CPI-C operations. In this case, a race condition may occur and cause the routing control block (RCB) to be freed two times.
Resolution
Hotfix information
The hotfix that resolves this issue is included in cumulative update package 3 for Host Integration Server 2010.
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:
2654652 Cumulative update package 3 for Host Integration Server 2010
Status
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
