How do I recover from the following Outlook 2007 error message?
"An extension failed to initialize. Cannot open file: extend.dat. The file may not exist, you may not have permission to open it, or it may be open in another program. Right-click the folder that contains the file, and then click Properties to check your permissions for the folder. You don't have appropriate permission to perform this operation".
I am the administrator account for this personal laptop. I cannot find the extend..dat file anywhere on my hard drive.
April 23, 2009 4:11 AM
May 12, 2012 3:16 AM