Article ID: 195052
Article Last Modified on 11/1/2006
APPLIES TO
- Microsoft Windows NT Workstation 4.0 Developer Edition
- Microsoft Windows NT Server 4.0 Standard Edition
This article was previously published under Q195052
SYMPTOMS
You create a folder called "Program" in the root of the volume hosting the
Windows NT installation (boot partition). When you delete or rename it
later, a dialog box comes up:
This change may impact one or more registered programs. Do you want to
continue?
This message appears even though no applications are installed in this
folder.
If you click Yes, applications installed under the Program Files folder
may not be usable anymore because the registry location will point to the
Recycle Bin instead of the correct location. The application will not load
for registered extensions and it cannot be started as an OLE or COM server
anymore. You can still start the application through a shortcut to the
executable or by double-clicking it in Explorer. The problem will happen
with any path where the folder name matches the directory containing an
application. For example, on the German version of Windows NT, the folder
C:\Programme\Windows can cause this problem in conjunction with the
folder C:\Programme\Windows NT.
Another symptom of the same problem occurs when the root folder contains a file named Program or an executable file with a base name of Program (such as C:\Program.exe). If this is the case, all the programs under the C:\Program Files folder with paths that do not contain quotation marks stop working.
CAUSE
On all Rename and Delete operations, the shell checks the files involved
against the registry of all installed applications. If the path to the
application executables contains spaces, the entry should be placed into
the registry with double quotation marks around it because these entries
can also contain command-line parameters.
However, many applications do not use quotation marks when adding the
registry entries during installation. The parser, on the other hand, relies
on those quotation marks to work correctly.
This means that the parser will read the string "C:\Program Files\Windows
NT\Accessories\Wordpad.exe" as if it were the application C:\Program with
the parameters Files\Windows and NT\Accessories\Wordpad.exe. Hence, it will
display this warning when you try to delete or rename the C:\Program
folder. It will also later change the path in the registry to the Recycle
Bin or the new name for C:\Program.
If you have a file named C:\Program, the problem occurs when the shell tries to start a program with a path that does not contain quotation marks because the file produces a match against C:\Program, which is the first part of the full file name.
RESOLUTION
A supported fix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Apply it only to computers that are experiencing this specific problem.
To resolve this problem, contact Microsoft Product Support Services to obtain the fix. For a complete list of Microsoft Product Support Services phone numbers and information about support costs, visit the following Microsoft Web site:
NOTE: In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.
The English-language version of this fix should have the following file attributes or later:
Date Time Version File name Platform
-----------------------------------------------------
11/12/99 00:16 1.854.736 Shell32.dll Alpha
11/12/99 00:18 1.279.248 Shell32.dll Intel
After you apply this fix, the rename operation problems described in the "Cause" section no longer occur. The parser has been improved to check for these conditions.
However, because of the ambiguity of the path name, the second issue (having a C:\Program.exe or C:\Program file on the on the disk), cannot be solved. The only solution is to change the program in one of the following ways:
- When you register the program, make sure to include quotation marks if the path contains spaces.
- Instead of registering the long path name, use the shortened path name. For example, use "c:\progra~1" for "c:\program files." Note that short file names might not be enabled on all computers and that they might change after restore operations.
WORKAROUND
You can prevent the problem before it occurs with either of the following
approaches:
- Turn off the Recycle Bin through its properties. This workaround does
not help with renames.
- Use File Manager (Winfile.exe) for graphical file system management
instead of Explorer. Install Microsoft Internet Explorer 4.01 Service
Pack 1 or later. It does not have the problem with deletions and only
affects the keys below the following path:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\App
After the problem has happened, there are several approaches to correcting
the problem:
- Undo the delete operation by restoring the directory from the recycle
bin and then delete it through the command line. This workaround is not
feasible with a rename operation.
- Restore a recent backup of the registry, especially the SOFTWARE hive. Do this restore through an emergency repair.
- Reinstall (remove may be required) all affected applications. If you
have not deleted the folder yet, delete it through the command line
instead of Explorer.
STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.
Keywords: kbhotfixserver kbqfe kbenv kbprb KB195052