When you try to open a custom form in Microsoft Outlook, you may receive one of the following error messages:
The form you selected could not be displayed. An error occurred registering the form in the OLE registry.
-or-
You do not have permission to send the message on behalf of the specified
user.
You do not receive the error message when you use the form if you are logged on to the computer as Administrator or as a member of the Administrators group.
This behavior may occur if all of the following conditions are true:
To resolve this issue, rename the Frmcache.dat and Usrclass.dat files (if they are present) in the Default User profile and the profiles of the users who are experiencing the behavior described earlier in the "Symptoms" section of this article. To do this, follow these steps.
NOTE: Because there are several versions of Microsoft Windows, the following steps may be different on your computer. If they are, see your product documentation to complete these steps.
- Log on to the computer as Administrator or as a member of the Administrators group.
- Right-click Start, and then click Explore.
- On the Tools menu, click Folder Options.
- Click the View tab, and then in the Advanced settings list, under Files and Folders, do the following:
- Under Hidden files and folders, click Show hidden files and folders.
- Click to clear the Hide file extensions for known file types check box.
- Click OK.
- Locate the following folders, where drive is the drive on which Windows is installed, and UserName is the name of the user who is experiencing the behavior described in the "Symptoms" section of this article. There may be more than one user.
drive:\Documents and Settings\Default User\Local Settings\Application
Data\Microsoft\Forms
drive:\Documents and Settings\UserName\Local Settings\Application
Data\Microsoft\Forms
- Rename the Frmcache.dat file in each of the folders that you located in step 6:
- Right-click the Frmcache.dat file, and then click Rename.
- Type frmcache.old, and then press ENTER.
- Locate the following folders, where drive is the drive on which Windows is installed, and UserName is the name of the user who is experiencing the behavior described in the "Symptoms" section of this article. There may be more than one user.
drive:\Documents and Settings\Default User\Local Settings\Application
Data\Microsoft\Windows
drive:\Documents and Settings\UserName\Local Settings\Application
Data\Microsoft\Windows
- Rename the Usrclass.dat file in each of the folders that you located in step 8:
- Right-click the Usrclass.dat file, and then click Rename.
- Type usrclass.old, and then press ENTER.
- Quit Windows Explorer.
For additional information about how to troubleshoot forms, click the article number below
to view the article in the Microsoft Knowledge Base:
201083
(http://kbalertz.com/Feedback.aspx?kbNumber=201083/EN-US/
)
OL2000: Troubleshooting Forms That Don't Run on Other Computers
For additional information about working with custom forms in Outlook, click the article numbers below
to view the articles in the Microsoft Knowledge Base:
146636
(http://kbalertz.com/Feedback.aspx?kbNumber=146636/EN-US/
)
OL2000: Questions About Custom Forms and Outlook Solutions
271225
(http://kbalertz.com/Feedback.aspx?kbNumber=271225/
)
Resources for custom forms and programming in Outlook 2000
For additional information about the Outlook forms cache, click the article numbers below
to view the articles in the Microsoft Knowledge Base:
232303
(http://kbalertz.com/Feedback.aspx?kbNumber=232303/EN-US/
)
OL2000: How the Forms Cache Works
232314
(http://kbalertz.com/Feedback.aspx?kbNumber=232314/EN-US/
)
OL2000: How to Troubleshoot the Outlook Forms Cache
195754
(http://kbalertz.com/Feedback.aspx?kbNumber=195754/EN-US/
)
OL2000: How to Clear the Outlook Forms Cache
Article ID: 320835 - Last Review: August 29, 2007 - Revision: 4.3
APPLIES TO
- Microsoft Outlook 2002 Standard Edition
- Microsoft Outlook 2000 Standard Edition
- Microsoft Windows 2000 Standard Edition
- the operating system: Microsoft Windows XP