OFF: "Setup cannot register Mfc40.dll" Error Message
ID: Q178652
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The information in this article applies to:
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Microsoft Office 97 for Windows
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Microsoft Office for Windows 95, versions 7.0, 7.0a, 7.0b
SYMPTOMS
When you run the Microsoft Office Setup program, you may receive the
following error message
Unable to register Mfc40.dll
followed by:
Setup cannot register Mfc40.dll in the system registry because an older
version is in use. Close all applications and try again.
CAUSE
Another program is running that is using any version of the file Mfc40.dll.
RESOLUTION
Close all programs by removing the icons from the Startup folder and
closing any programs that are on the taskbar. To do so, follow these steps:
- Click the Start button, point to Settings, and then click Taskbar.
- Click the Start Menu Programs tab, and then click Advanced.
- Double-click the Programs folder, and then double-click the Startup
folder. Make a note of the icons that are in the Startup folder.
- Drag all icons from the Startup folder to the Programs folder.
- Click the Start button, click Shut down.
- Click Restart and then click OK to restart the computer.
- Right-click each program that appears on the Windows Taskbar and then
click Close.
- Close all tasks except Systray and Explorer. To do this, press
CTRL+ALT+DEL to display the Task List. In the Close Program dialog box,
click the task you want to close, and then click End Task.
- Run the Microsoft Office Setup program. If the Setup program runs
in Maintenance mode, click Reinstall. Otherwise, choose the type of
installation you want to perform.
- After setup is complete, repeat steps 1-5, but this time move your
shortcuts back to the Startup folder from the Programs folder.
MORE INFORMATION
Some programs install different versions of the Mfc40.dll and the
Msvcrt40.dll files than the Microsoft Office Setup program installs. If
one of the files is the wrong version, the Microsoft Office Setup program
may fail to complete successfully.
Both Microsoft Office 7.0 and Microsoft Office 97 install the following
versions of the Mfc40.dll and Msvcrt40.dll files:
Mfc40.dll Size: 924,432 bytes Version: 4.1.6139
Msvcrt40.dll Size: 326,656 bytes Version: 4.10.6038
REFERENCES
For more information about incorrect versions of Mfc40.dll and
Msvcrt40.dll, see the following article in the Microsoft Knowledge Base:
Q163556 "Unable to Register Mfc40.dll" Error During MS Office Install
Q153733 PRB: Wrong Mfc40.dll and Msvcrt40.dll from ActiveX CD-ROM Disc
Q159685 ACC95: "Unable to Register Mfc40.dll" Error Installing MS Access
Additional query words:
errors errs err
Keywords : kberrmsg offwinsetup
Version : WINDOWS:7.0,7.0a,7.0b,97
Platform : WINDOWS
Issue type : kbprb