Outlook 2007 upgrade and ost file size limit


I have upgraded from Oulook 2000 to 2007 and I am using an Exchange hosting service. The main reason for the upgrade was to take advantage of the increased size limit of the data file. I see that Exchange and Outlook 2007 utilize an ost data file to syncronize. It appears this file still has a 2gig limit as I receive an error about reaching capacity. I tried creating a new profile but still run into the size issue. When checking the profile properties I see where it lists the ost file but it does not allow me to revise the file it utilizes. It appears I can create a new pst file with the larger capacity but will Exchange sync with a pst file rather than an ost file? Any help on this issue will be greatly appreciated!


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I'm confused about OST files, size limits and performance.
All I read suggest to use Cached Mode for Outlook so that every user has a local copy of their email, it will decrease network traffic etc. But I've also read that OST's file format is horrible and when you get up to 1GB you will have problems or delays.
So what do I do with the president laptop that will without a doubt have a mailbox size way north of 2GB? We have about 130 users and most of them will hit 1GB with in a year.
What is common practice for OST files and desktops and laptops?
We have Exchange 2007 SP1

Thank you for your help
/Mats




I've moved my Outlook 2007 PST and OST files to another disk drive to
make it easier to backup and dual boot. However, I don't see any obvious way
to move the Outlook Connector OST file. I've searched on Google and through
this newsgroup and can't find any method for doing this.
Is it actualy possible to move the Connector OST file to a non-default
location? Thanks.

Rich Eckman




I archived a bunch of emails, which created a new archive file about 2GB in
size. My .ost file remained the same size (7.5GB) Should the .ost file
size shrink after archiving? (using Windows Vista/Office 2007) Is the .ost
file size large enough that it could cause problems with things like indexing?




I archived a bunch of emails, which created a new archive file about 2GB in
size. My .ost file remained the same size (7.5GB) Should the .ost file
size shrink after archiving? (using Windows Vista/Office 2007) Is the .ost
file size large enough that it could cause problems with things like indexing?




Trying to assist a friend who can no longer access his Outlook file. I asked
him how large the file is, and he told me 2GB. A little research has
disclosed that this is the limit for pre-2003 versions, but for Outlook
2003, the file size limit is 20GB. Question: if my friend upgrades to 2003,
will he again be able to access (and add data to) his 2GB pst file?




I have a user who is receiving a message generated in Outlook which states
that his mailbox is too large and then the mailbox cleanup dialog opens. On
our corporate network we use cached exchange mode so that people can work
offline with public folder favourites.

I have narrowed down the cause of this message to the OST file. It cannot be
the mailbox size limit on the exchange server as this is set to 85 mb and his
mailbox is of a minimal size of a few KB. I have set his account to not used
chached exchange mode and this has temporarily solved the problem as he is
not receiving the messages any more.

Is there a size limit of 10GB for .ost files or files stored on an NTFS
volume and is it configurable? We have previously experienced a problem where
the OST reaches 2GB and causes the same error messages when stored on a FAT32
volume and converting to NTFS has resolved this.




I have a user with a mailbox of over 4GB in size. Currently he is running on
a desktop computer with no cache (OST). He has a new laptop computer and I've
set up Outlook 2003 on it. After changing the settings, Outlook went about
creating the OST file and then the message came up.
I've checked this site and there are different links all over the place but
this should be a relatively easy fix (I'm thinking) but I guess not.
On exchange, I have not set any restrictions and we are under the 16GB limit.

I found a document on the MS web site http://support.microsoft.com/kb/832925
How to configure the size limit for both (.pst) and (.ost) files in Outlook
2007 and in Outlook 2003

I've set the PST registry entries to the maximum but I still get the same
message when I start Outlook on his laptop

Thanks in advance for the help
John




My outlook 2000 has quit responding because my outlook.pst file has exceeded
the 2.0GB file size limit. Outlook 2003 and later has a 20GB limit.

If I upgade and install Outlook 2007, will it read the .pst file and use it
as part of the 2007 setup procedure.




Hi,

If this going to wrong news group, please let me know where I should
be posting. Anyway, here goes...

I'm having very strange behaviour from some Outlook 2007
installations.

When auto archive runs, it does so successfully - creates the
archive.pst file (the first time it runs) and then moves the files to
the new .pst. However, when I try and have a look at the archived
messages, they're gone. Folder size is zero and no messages are moved
into the file.

The funny thing is that it faithfully recreates the folder structure
from the original .pst for messages that meet the archive settings
(older than 12 months), but no messages are stored in the archive.
The problem is that the messages from the original store are gone.

The mail files are generally large (from 500MB to 2.5GB), which is the
reason that we upgraded from OL2003 and for using auto archive. The
users were using an IMAP infrastructure, but everything is running
POP3 from OL2007 because of the size of the individual message stores
and the file size limits from previous versions of OL.

My own mail store (at office) is large (~1.8GB after auto archiving)
and the files are showing up as expected in the archive. However,
these other machines are having the above issues. The problem
machines are all running XP SP2 and my machine is (now) running Vista
Business. Previously, my machine was also XP SP2 and worked well.

I can't seem to figure this out and I've searched the web twice (it
feels like), including MS support to no avail. I suppose it's quite
possible that I've cocked something up, but I can't figure out what
the problem would be.

Any help would be much appreciated.

Cheers!
Rowan




Pre 2003, there was a 2GB pst/ost file size limit. 2003 and beyond
have supposedly expanded that maximum .pst file size to 20GB (
http://support.microsoft.com/kb/832925 ). Can anyone give me their
experiences with large .pst files in the wild?

I've got a user with 10GBs of mail spread over about 7 .pst files. One
of the .pst files is over 2GB and could potentially be pushed up to
4GB in the near future. The user reports that Outlook will occasionaly
perform slowly and even freeze copmletely. I suspect that it's caused
(or at least exacerbated) by the .pst files being fragmented all over
the hard drive with no contiguous free space big enough to hold the
file in one chunk. That's obviously not a problem inherent to
large .pst files. Does anyone have experience with massive .pst files
and their ills?

TIA

StandardGreen
-@- gmail -dot- com




Hi All,

I've run into the 2 gig file size limit on Outlook 2000 a couple times now.
Is there a way to clean the files so I can avoid this in the future? The
way I fixed things is that I deleted stuff, then made a new pst file and
copied all the folders over to the new file. I went from just over 2gig to
1.3 gigs. I've done this once before I think, so I know I'll hit it again.
Just wondering how to avoid all this.

Thanks,
me




Pre 2003, there was a 2GB pst/ost file size limit. 2003 and beyond
have supposedly expanded that maximum .pst file size to 20GB (
http://support.microsoft.com/kb/832925 ). Can anyone give me their
experiences with large .pst files in the wild?

I've got a user with 10GBs of mail spread over about 7 .pst files. One
of the .pst files is over 2GB and could potentially be pushed up to
4GB in the near future. The user reports that Outlook will occasionaly
perform slowly and even freeze copmletely. I suspect that it's caused
(or at least exacerbated) by the .pst files being fragmented all over
the hard drive with no contiguous free space big enough to hold the
file in one chunk. That's obviously not a problem inherent to
large .pst files. Does anyone have experience with massive .pst files
and their ills?

TIA

StandardGreen
-@- gmail -dot- com




Hi,

If this going to wrong news group, please let me know where I should
be posting. Anyway, here goes...

I'm having very strange behaviour from some Outlook 2007
installations.

When auto archive runs, it does so successfully - creates the
archive.pst file (the first time it runs) and then moves the files to
the new .pst. However, when I try and have a look at the archived
messages, they're gone. Folder size is zero and no messages are moved
into the file.

The funny thing is that it faithfully recreates the folder structure
from the original .pst for messages that meet the archive settings
(older than 12 months), but no messages are stored in the archive.
The problem is that the messages from the original store are gone.

The mail files are generally large (from 500MB to 2.5GB), which is the
reason that we upgraded from OL2003 and for using auto archive. The
users were using an IMAP infrastructure, but everything is running
POP3 from OL2007 because of the size of the individual message stores
and the file size limits from previous versions of OL.

My own mail store (at office) is large (~1.8GB after auto archiving)
and the files are showing up as expected in the archive. However,
these other machines are having the above issues. The problem
machines are all running XP SP2 and my machine is (now) running Vista
Business. Previously, my machine was also XP SP2 and worked well.

I can't seem to figure this out and I've searched the web twice (it
feels like), including MS support to no avail. I suppose it's quite
possible that I've cocked something up, but I can't figure out what
the problem would be.

Any help would be much appreciated.

Cheers!
Rowan




I've been supporting Outlook users for about 10 years...but I haven't been able to figure this one out.

My exchange users are all on Outlook 2003. In the last 12 months, 3 of them have received messages saying their mailbox has exceeded the limit. Sure enough, I check and their OST files are right at 3.99 GB. I followed the directions in microsoft's kb article 932925 to add the PST registry key and set the values for MaxFileSize, WarnFileSize, MaxLargeFileSize & WarnLargeFileSize. I added the PST subkey to the Policy key first. After restarting outlook, it gave the same problem. So I added the PST key to the preference key with the same values. Restarted, and no difference.

I have followed the instructions from Microsofts site, as well as other sites to make sure I am doing it right, but it does not help. I have even erased and rebuilt the OST files, but they still stop at 3.99GB.

My only resolution for now is to turn off cached mode, which is not a good long term solution.

Does anyone have any idea what I might be doing wrong?




Hello all,

One of my users outlook 2003 ost file will not exceed 2GB. On my exchange
2003 server I have his limit set to 2.5GB but he always get warned before he
reaches the 2GB mark to clean up his mailbox.

How can I fix this?

Thanks,
Eddie




Hi All,

I've run into the 2 gig file size limit on Outlook 2000 a couple times now.
Is there a way to clean the files so I can avoid this in the future? The
way I fixed things is that I deleted stuff, then made a new pst file and
copied all the folders over to the new file. I went from just over 2gig to
1.3 gigs. I've done this once before I think, so I know I'll hit it again.
Just wondering how to avoid all this.

Thanks,
me




Hello all,

One of my users outlook 2003 ost file will not exceed 2GB. On my exchange
2003 server I have his limit set to 2.5GB but he always get warned before he
reaches the 2GB mark to clean up his mailbox.

How can I fix this?

Thanks,
Eddie




Hi All,

I've run into the 2 gig file size limit on Outlook 2000 a couple times now.
Is there a way to clean the files so I can avoid this in the future? The
way I fixed things is that I deleted stuff, then made a new pst file and
copied all the folders over to the new file. I went from just over 2gig to
1.3 gigs. I've done this once before I think, so I know I'll hit it again.
Just wondering how to avoid all this.

Thanks,
me





SBS 2008 Exchange 2007 Windows 7 client running Outlook 2007.

I came in to check outlook on this client and when starting Outook was presented with a message saying the .ost file was locked. I had accessed this client from a remote session a few days ago and probably opend Outlook then but that session was closed. I am running a local client here.

I went to the microsoft site but that did not help. These are the messages:

FIRST MESSAGE:

File access is denied. You do not have the permission required to access the file C:PROGR~Office14<myfile>.ost

SECOND MESSAGE after 2 click on OK:

This error can occur if you attempt to run Outlook from a Terminal Server session when the offline Outlook Data File (.ost) is in use by the console session.

To access this instance of Outlook, exit the current Terminal Server session, and then start a new session by using the following Run command in Microsoft Windows:

mstsc.exe /CONSOLE

You must be an administrator on the computer that is accessing the console session. You cannot access a console session from a computer running Microsoft Windows XP Home edition. But you can do so from a computer running Microsoft Windows Server 2003, Windows XP Professional, Windows Vista, or Windows 7.

For more information, see Microsoft Knowledge Base article 826488.

Advice appreciated.

 

Many thanks for your time.