cached mode slow

Posted on 2005-03-10
Medium Priority
Last Modified: 2006-11-17
i notice that some of our users say cached mode of office xp sometimes takes longer than regular outlook connection.

any way to fix that?

Question by:rageshdc
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LVL 104

Accepted Solution

Sembee earned 600 total points
ID: 13510206
Sounds like a typical user question. No detail, no qualification. What do they mean by slow?

If this is Outlook 2002, then there is no cached mode - it will be offline folders.
If this is Outlook 2003, then cached mode only checks for new email at a certain interval - every 60 seconds I believe. There is a registry hack that you can do to shorten the time.


Author Comment

ID: 13510409
clients are outlook2003.  i'm not sure if it's a timing issue.  basically outlook will say that it's synchronizing and will then slllloooowly download mail.  at this time outlook will be unresponsive for a up to 30 seconds.

the same client will download mail without any issues when caching is off.

we do want to implement cached mode but it should work *better* than without it.
LVL 104

Expert Comment

ID: 13510605
Are all these clients on the same network as the Exchange server? Nothing in between that we need to worry about?

When you are working "live" the email isn't actually being downloaded to the machine - everything stays on the server. Cached mode works off the same technology as offline folders in previous versions of Outlook - so all the email has to be downloaded to the local machine.

Any pattern with the users who complain? Size of mailboxes for example?

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Author Comment

ID: 13510666
sheesh that explains it.  that really sucks.  yeah exchange may "stay connected" more but now we're going to get "why is my outlook taking so long to open?" calls.  

yeah i think the users who complained have bigger mailboxes.

same network.

any way to increase speed or are they stuck "downloading" it?

does this mean that they'll have growning "ost's" on their machine?

Author Comment

ID: 13510708
that's "growing" btw

Author Comment

ID: 13511042
ok since caching/ost's are out of the question....(never realized they need ost's...thanks sembee--i'll be splitting points on this)....

my real problem then is:  occasionally our dc's go down for various reasons.  is there a way to make outlook "look" for another dc?

user is in outlook2003.
user authenticates to dc1.  dc2 is up too.
dc1 goes down for a couple minutes

all of the sudden some things in outlook don't work like calendar.  it prompts for username/pw.  i guess it's looking for the same dc again. [let me know if i'm wrong].

is it possible to make outlook know to look for dc2 in the middle of an open session?
LVL 104

Expert Comment

ID: 13511361
It isn't Outlook looking for a DC, but Exchange.
Exchange will go looking for another DC on its own, but will take a while - 30 minutes or more. I would try to avoid having your DCs go down in production hours as it causes chaos. If they are, then you need to look at why they are going down.


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