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Biztalk: No result returns when click the button “Run Query” in HAT [Operations -> Service Instances] or [Operations ->Messages]

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Problem:

=======

In BizTalk
2004 SP2, no result returns when click the button “Run Query” in HAT
[Operations -> Service Instances] or [Operations ->Messages]. Some other
queries in HAT such as [Queries->Message counts] still work fine. The
problem begins after the .NET 2.0 is uninstalled.

Analysis:

======

Although the
.NET 2.0 is uninstalled, the following registry is still existed in the system,
that causes the HAT tries to locate the .NET runtime type library mscoree.tlb
from the .NET 2.0 runtime folder but that file (mscoree.tlb) is removed already
from the folder due to the un-installation.

[HKEY_CLASSES_ROOT\TypeLib\{5477469E-83B1-11D2-8B49-00A0C9B7C9C4}\2.0\0\win32]

@="C:\\WINDOWS\\Microsoft.NET\\Framework\\v2.0.50727\\mscoree.tlb"

Solution:

========

Two
workarounds to fix the problem:

1. Copy the .NET runtime 1.0 mscoree.tlb to
the .NET 2.0 runtime folder.

To copy
mscoree.tlb

From

C:\WINDOWS\Microsoft.NET\Framework\v1.1.4322\

to

C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\

2. Remove the registry key
[HKEY_CLASSES_ROOT\TypeLib\{5477469E-83B1-11D2-8B49-00A0C9B7C9C4}\2.0] from the
system.

*note* Please
back up the key before removing so that it can be restored back If there are
any other errors.

Regards,

Xiao Dong Zhu