Extend.dat file

  • Thread starter Thread starter Duncan Findlay
  • Start date Start date
D

Duncan Findlay

The following message pops up when I try to open MS Outlook 2000. (I use
Windows ME):

"An extension failed to initialize. Can't open file C:\Windows\Application
Data\Microsoft\ Outlook\ 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 to the folder. You don't have appropriate permission
to perform this operation." When I click "close", the Outlook program comes
up and there does not appear to be any problem with its operation
thereafter.

I do have a file named "extend.dat" in the folder C:\Windows\Application
Data\ Microsoft\ Outlook\, and I have the following files that are .dat
files in that folder:

1. extend.old - Created Monday, August 27, 2001, 11:05:21 PM; modified
Monday, January 29, 2001, 11:35:04 AM
2. outcmd - Created Monday, August 27, 2001, 11:05:22 PM; modified Sunday,
July 29, 2001, 11:02:08 PM
3. VIEWS - Created Monday, August 27, 2001, 11:06:26 PM; modified Tuesday,
January 30, 2001, 12:04:16 AM

I tried to isolate the "extend.dat" file in that folder by creating a sub
folder "Old Outlook files" into which I transferred all the .dat files that
were not named "extend.dat". But that did not eliminate the problem.

I did right-click on the folder C:\Windows\Application
Data\Microsoft\Outlook\ and the Properties, but there is no place to
indicate whether or not I have permission to perform the operation.

There does not appear to be any problem in operating Outlook 2000 except for
this annoying message that pops up each time I try to open it.

Can you help?

Duncan
 
Have you tried deleting or renaming the extend.dat file? (Sounds like
someone else already tried that a few years ago, since you have an
"extend.old" file.) Try that -- Outlook should create a new extend.dat file
next time you open it and that may solve the problem.

--
Jocelyn Fiorello
MVP - Outlook

*** Replies sent to my e-mail address will probably not be answered --
please reply only to the newsgroup to preserve the message thread. ***


In
 
Thanks, Jocelyn:

I renamed the file "extend1.dat" and it now seems to open without that
annoying message.

Duncan
 
Back
Top