Microsoft KB Archive/166897

= Windows NT 3.51 Regedt32 Fails to Load a Hive from Windows NT 4.0 =

Article ID: 166897

Article Last Modified on 11/1/2006

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APPLIES TO


 * Microsoft Windows NT Workstation 3.5
 * Microsoft Windows NT Workstation 3.51
 * Microsoft Windows NT Workstation 4.0 Developer Edition
 * Microsoft Windows NT Server 3.5
 * Microsoft Windows NT Server 3.51
 * Microsoft Windows NT Server 4.0 Standard Edition

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This article was previously published under Q166897



IMPORTANT: This article contains information about editing the registry. Before you edit the registry, make sure you understand how to restore it if a problem occurs. For information about how to do this, view the "Restoring the Registry" Help topic in Regedit.exe or the "Restoring a Registry Key" Help topic in Regedt32.exe.



SYMPTOMS
If you use Registry Editor to load a registry hive from a later version of Microsoft Windows NT than you are currently using, the following error message may appear:

Registry Editor could not load the key



CAUSE
The registry format supported by the older Registry Editor may not be compatible with registry files from newer releases of Windows NT. As a result, registry files from newer releases of the operating system may not be edited with older versions.

However, newer versions of Windows NT and Registry Editor are compatible with older versions of Windows NT registry files.



RESOLUTION
WARNING: Using Registry Editor incorrectly can cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that problems resulting from the incorrect use of Registry Editor can be solved. Use Registry Editor at your own risk.

For information about how to edit the registry, view the "Changing Keys And Values" Help topic in Registry Editor (Regedit.exe) or the "Add and Delete Information in the Registry" and "Edit Registry Data" Help topics in Regedt32.exe. Note that you should back up the registry before you edit it.
 * 1) While logged on as an administrator, copy the registry file to a floppy disk.

Note: This will only work if the file is small enough to fit on the floppy disk.

For Example, COPY %Winnt%\System32\Config\System to a floppy disk.
 * 1) Take the floppy disk to another computer running the same or higher version of Windows NT.
 * 2) Start Registry Editor (Regedt32.exe) and select the following subkey:


 * 1) Click Load Hive from the Registry menu.
 * 2) Type a temporary name for the hive you are loading.
 * 3) Make the necessary changes to the registry hive.
 * 4) Select the temporary name of the registry hive and click Unload Hive from the Registry menu.
 * 5) Rename the existing registry file on the source system to a different name.
 * 6) Copy the edited version of the registry file to the source system's original directory and filename.

For additional information, please consult the following article in the Microsoft Knowledge Base:

ARTICLE-ID: 165748

TITLE : How to Disable a Service or Device that Prevents NT from Booting

Additional query words: nt registry

Keywords: kbprb kbsetup KB166897

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