You use a mixed-case password in an application to connect to an IBM host system in a Microsoft Host Integration Server 2010 environment. When you try to connect by using one of the following Host File Providers, the log on try may fail:
Managed Data Provider for Host Files
OLE DB Provider for AS/400 and VSAM
This issue occurs because the Host File Provider incorrectly changes mixed-case passwords into uppercase passwords before the Host File Provider sends the password to the IBM host system.
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
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of these products.