Clear the Forms Cache

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The Microsoft knowledge base outlines how to clear the forms cache in Article 195754

 

The preferred way to clear the cache is method 2 of the above article and is outlined below.

 

Method 2: Delete the Forms Cache Files

If you do not have Outlook 2000 SR-1/SR-1a, Outlook 2002 or Outlook 2003 installed, or if you are using Outlook 2000 in the Internet Mail Only (IMO) mode, you can delete the forms cache file manually. The forms cache is stored in a folder called Forms. The Forms folder may be located in one of many locations depending on the operating system that you are using and how you have the operating system configured.

 

The Frmcache.dat file is the primary file to delete. The Frmcache.dat file serves as an index of the individual forms that have been cached on the computer. Use the following steps to manually delete the Frmcache.dat file. In addition, these steps delete all of the cached forms on your computer, which are stored in sub-folders of the Forms folder.

1.Quit Outlook.        
2.Click the Microsoft Windows Search or File command to locate the Frmcache.dat file on your hard disk. If you are not familiar with this procedure, please consult your Microsoft Windows documentation, as the procedure varies depending on the version of Windows that you are using.        
3.Click to select the Frmcache.dat file.        
4.On the File menu, click Open Containing Folder to open the Forms folder in a separate window.        
5.On the Edit menu, click Select All.        
6.On the File menu, click Delete.        

 

When you restart Outlook, and select the Admin functions-Update forms toolbar option, the forms cache is re-created. Until the forms are updated or a custom form is used, Outlook does not re-create the Frmcache.dat file.