XADM: Installing Exchange Server 5.5 SP1 on a Computer Running Clustering Services (200490)

IMPORTANT: This article contains information about modifying the registry. Before you modify the registry, make sure to back it up and make sure that you understand how to restore the registry if a problem occurs. For information about how to back up, restore, and edit the registry, click the following article number to view the article in the Microsoft Knowledge Base:

256986 Description of the Microsoft Windows Registry

SUMMARY

Installing Exchange Server 5.5 Service Pack 1 (SP1) on a computer running clustering services provided by Windows NT 4.0 Service Pack 4 (SP4) release candidate is not recommended. Setup may not work because the IrpStackSize parameter is too small.

MORE INFORMATION

If the following entry is created in the Windows NT application event log during installation of Exchange Server 5.5 SP1, you can use a workaround to run clustering services and SP1.

ID: 2011
Source: srv
The server's configuration parameter "irpstacksize" is too small for the server to use a local device. Please increase the value of this parameter.

The workaround is to increase the value of the IrpStackSize parameter.

WARNING: If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.

If the following DWORD key exists in the registry, increase the current value by one.
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\ Lanmanserver\Parameters\IrpStackSize
If this registry key does not exist, add it to the registry, and set the value to 6.