Outlook 2000 performs slowly or stops responding (249767)
The information in this article applies to:
This article was previously published under Q249767 SYMPTOMS Outlook may perform slowly or appear to stop responding.
CAUSE Poor performance can be caused by a problem with Add-ins
loading when Outlook attempts to write to the Extend.dat file. If the logged on
user does not have permissions to Extend.dat, or the file is damaged or in a
read-only state, then Outlook appears to enter a programming loop attempting to
write to this file. Quitting Outlook, deleting the Extend.dat file, and
restarting Outlook often resolves the performance problem.
There are
two problems. First, if for some reason Outlook is unable to create the
Extend.dat file, either because the folder or the file are read-only for
example, Outlook performs very slowly. The slow performance is because every
event that needs to be sent to an extension causes the entire extension manager
to be reinitialized.
Second, the Extend.dat file is placed in a
roaming location. This is so that a roaming user can use Outlook on two
different computers at the same time. Both instances of Outlook attempt to use
the same Extend.dat file over the network. The second instance of Outlook opens
the file read-only, and encounters the first problem. RESOLUTION To resolve this problem, obtain Microsoft Office 2000
Service Release 1/1a (SR-1/SR-1a). To obtain SR-1/SR-1a, click the
article number below to view the article in the Microsoft Knowledge Base:
245025 OFF2000: How
to Obtain and Install Microsoft Office 2000 Service Release 1/1a (SR-1/SR-1a)
STATUSMicrosoft
has confirmed that this is a problem in the Microsoft products that are listed
at the beginning of this article.
This problem was corrected in Microsoft Office 2000
SR-1/SR-1a. MORE INFORMATION This fix improves how Outlook handles communications with
the Extend.dat file.
| Modification Type: | Minor | Last Reviewed: | 10/7/2004 |
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| Keywords: | kbUpgrade kbstartprogram kbbug kbfix KB249767 |
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