SymptomsWhen you try to insert a UserForm in the Microsoft Visual Basic Editor in this article, or when you try to open a document that contains a product that is listed at the beginning of the user form, you may receive the following error message:class is not registered.
looking for an object with CLSID: {ac9f2f90-e877-11ce-9f68-00aa00574a4f}Orclass is not registered.
looking for an object with CLSID: {c62a69f0-16dc-11ce-9e98-00aa00574a4f}When you click Help, the following message is displayed:no Help topics exist. your application vendor contacts the updated Help file (129)Close the dialog box when you click OK.
This error may also occur when you try to save a Microsoft Excel 97 document as a Hypertext Markup Language (HTML) document by clicking Save As HTML on the File menu. when you click OK, a dialog box appears and displays the following message: -Reason This issue causes the dynamic link library Fm20.dll to be missing or incorrect for Microsoft Windows registry keys. When you use the UserForm and form controls in Microsoft Excel 97, the correct registration of this file is required. Solution SolutionsTo resolve this issue, please register Fm20.dll. 161983Regsv32a.exe can be published in the Download CenterRegister Fm20.dllto register the Fm20.dll, follow these steps:
- Use Microsoft Windows Explorer or the Winnt\System32 folder (in the Microsoft Windows NT) Windows\System folder to locate the Fm20.dll file.
If the file does not exist, it copies the Microsoft Office 97 CD from the OS\System folder to the appropriate location.
- Close all open programs.
- Click Start, click Run on the Windows taskbar, and then type the following: Regsvr32.exe Fm20.dll
- Click OK. success in C:\windows\system\fm20.dll's DllRegisterServer.
Fm20.dll should register the file correctly. Properties Article ID: 182500-last review: January 22, 2007-Revision: 2.2 The information in this article applies to:
- Microsoft Excel 97 Standard Edition
- Microsoft PowerPoint 97 Standard Edition
- Microsoft Word 97 Standard Edition
- Microsoft Visual Basic for Applications 5.0
This method is also applied to the VBA of AutoCAD2010, after experiment
Article Source: HTTP://SUPPORT.MICROSOFT.COM/KB/182500/ZH-CN
VBA: Error message: "Class not registered" Insert user form
