It seems as if you have too much running on that one box.

Ed Crowley MCSE+Internet MVP
Freelance E-Mail Philosopher
Protecting the world from PSTs and Bricked Backups!T

-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Ian Batty
Sent: Wednesday, December 07, 2005 6:07 AM
To: Exchange Discussions
Subject: Outlook 2003 requesting data problem / Exchange 2003

I have now Googled this to death and posted to the SBS list and I am no
nearer a solution, hope someone here has some insight!!

Up until a few weeks ago one of our SBS servers was working with Outlook
fine. We would get an occassional 'Outlook is requesting data' pop-up,
mainly when working away from the office using RPC over HTTP.

Now it is happening far too frequently, and it locks up Outlook for the
duration. This happens:

* in and out of the office
* in cached mode and also in 'not cached'
* using RPC and RPC over HTTP

After some research this is what I have found out

* The pop-up specifies the FQDN of the server so looking here:
http://tinyurl.com/9jnmc it makes me feel it could be a Domain Controller
problem not an Exchange one.

* Monitoring the counters listed in this article:
http://support.microsoft.com/?id=839862 indicates no issue with RPC request
being fulfilled. RPC requests and RPC ops/sec are low. It is only the RPC
Averaged latency that rises during the time when a pop-up is occuring.

* Again from the above article there are no other issues that have recently
changed (the only add-ins being used are the standard ones
etc.)

* Sometimes all clients in the office are affected simultaneously other
times only 1 at a time.

* Mailboxes are all less than 400MB and most less than 200MB, total store is
less than 10GB. Less than 15 mailboxes (only adding 1 every 6 weeks or so
max)

* When monitoring the general performance of the server it's CPU (1100Mhz
(with 1GB RAM)) generally runs at less than 20% but sometimes the CPU will
run flat out 100% for about 2 or 3 mins. At the same time 1 or more Outlook
clients have the pop-up. (When the CPU is running at 100% for some other
reason (e.g. spooling a big print job) all Outlook clients runs fine.)

* Using SysInternals Process Explorer pins down that there are 2 processes
that divide the CPU between them when one of these 100% runs is happening:

WMIPRVSE.EXE running under 'Network Service'
SVCHOST.EXE running under 'System'

* running Trend ScanMail monitor shows that it is not dealing with incoming
email viruses at the time.

So ... I am now a bit stuck what to do next. I could run a network monitor
or Ethereal trace to see what is happening with the traffic but I don't
think I know enough to understand what to do with the results!!
We have a 100MB switched network with usually less than 6 PCs active so I
can't see it being a network problem. Also it is possible to be surfing the
net or working on mapped drives while waiting for Outlook to sort itself
out. (These are not the cause of the Outlook pop-up which usually seems to
occur when using Outlook exclusively e.g. reading mail).

Has anyone else had this sort of issue? Could it be a recent patch? The SBS
is fully up to date with all OS and App patches inc. Exchange SP2.
There are no third party tie-ins to Exchange except Trend ScanMail which is
CSM 4 SMB v2 and has been untouched for months.

Hope someone can help!!


Ian
Ian Batty
Senior Support Engineer
www.exploreit.uk.com


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