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Outlook 2003 Problems with accessing shared calendars after migration to Exchange 2010

We have recently started migrating an exchange 2003 network to exchange 2010.
We are now in a mixed mode with about 100 users on exchange 2010 and the rest of the users, about 2500 users, still on exchange 2003.
All our clients use Outlook 2003. When the user is migrated to exchange 2010 they experience problems with opening shared calendars in their favorites. Some calendars open some calendars won't open and the user gets an error stating they do not have sufficient permission to open the calendar folder, or operation failed. They can also get this error if they have opened too many calendars or received an error on attempting anyone of them. The problem occurs for both calendars that reside on exchange 2003 and calendars that reside on exchange 2010 mailboxes Although we can’t find a common denominator for this problem, we have two work arounds. One is have them close and open outlook. They will then regain access to the calendar they were just blocked from before, though they may now be blocked from another’s they just had access to before they closed and opened Outlook. The second one is they delete the calendar which is causing the problem from the favorites and reopen the same calendar in their favorites. Sometimes the problem goes away. But we had cases where the problem persists. Or another calendar gets blocked.
End-users are complaining because there's no real solutions. And we still have to migrate about 2500 users, needless to say that with this problem we can't migrate.
Any help would be appreciated

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We recently migrated users from Exchange 2003 to Exchange 2010 and users are having problems accessing other user calendars that were shared in 2003 but for some reason are no longer working after migration. I see there is a problem for users trying to access shared calendars from mailboxes on the Exch 2010 from mailboxes on Exch 2003, but this one is slightly different that both mailboxes and calendars are on exchange 2010, has any one else found this problem and is there an fix or workaround?

The error that the users get back when trying to open the shared calendar is - The connection to the Microsoft Exchange Server is unavailable. Outlook must be online or connected to complete this action.

When I check the connection status of the users outlook they are online or connected.

The other problem that the users who are effected have noticed is if they go into the delgates page in the Outlook 2003 option they get a message returned - The delegates page is not available. Unable to access Outlook folder. - The connection to the Microsoft Exchange Server is unavailable. Outlook must be online or connected to complete this action.



I've got an interesting one here that is hopefully a quick fix.  After migrating to Exchange 2010 and moving the PF replicas to their new E2K10 server, users on Outlook 2003 cannot see the Free/Busy info for Resources (conf. rooms) that are into next year.  We can, however, see the Free/Busy via Webmail and Outlook 2007.  It seems very sporatic too.  On my Outlook, I can see one of the Resources Free/Busy, but not another (whereas prior I could not see either one of them beyond Dec. 2010).  Could this be RPC Encryption on the system folders?  If so, how do I remove it?  When I do a Get-RPCClientAccess, the encryption is denoted as False for the all the servers w/ PF and Mailboxes. Karl

I have an issue with a few migrated users being unable to open another users calendar. Before being migrated from Exchange 2003 to Exchange 2010 they could.

I've checked the permissions and they look ok. I've added myself and can open the calendar with no problems. We are using Outlook 2003 predominantly, but I've seen the issue occur with Outlook 2007 clients too.

Has anybody come across this?



I've noticed after migrating to Exchange 2010 from Exchange 2003, I've got an event log being generated infrequently that I can't figure out how to solve and I was wondering if anyone has experience on them.

Event 14031, Unable to find freebusy public folder: EX:/O=itc/OU=FIRST ADMINISTRATIVE GROUP on the server: EXCHANGE2010.itc.local for the user: User Name:50bc7a1b-00c3-403f-a531-ca9ddc31737e:b42e416c-5c0c-40ac-a7a9-ef230ab7f6ac:itcES2010.itc.local with legacy DN: /o=itc/ou=First Administrative Group/cn=Recipients/cn=user_id

For Event 14031 I can run the all users group and expand it in outlook's calendar and pull everyone's free/busy fine. Granted I recreated the free/busy public folder on the new exchsrv1 server and setup everything to point to the public folder/store. Note: Exchange 2003 no longer exis since 8-9 monthst!

Hi all.

A customer of mine recently migrated from exchange 2003 to Exchange 2010. They are still in the middle of transition but all mailboxes are moved to the 2010 mailbox store. Exchange 2003 servers are still in Exchange Organization.

Some of the users are experiencing some weird problems with calendar permissions after getting their mailbox moved.

Calendar permissions for user A (checking it from either the users Outlook or from ExFolders) shows permissions for direct calendar access for user B, C, D and so on.

User B, C, D cannot access user A’s calendar even though permissions looks fine. The error message from Outlook is the same as if User B, C, D didn’t have access to User A’s calendar at all.
Removing User B, C, D’s permissions from User A’s calendar and adding them again with exactly the same permission level solves the problem.

Have any of you seen this problem after migrating from Exchange 2003 to Exchange 2010 before and know why this happens?


I have a very bizarre problem with our new MS Exchange 2010 server.  We migrated from Exchange 2007 and have almost no problems except for a very small issue which we can't seem to resolve.  Our company uses a variety of MS Word documents, either doc or docx, and mail merge from MS Outlook using the Tools > Mail Merge drop down in Outlook.  The mail merge works fine and pulls over all information from the contact except the Notes field.  We have confirmed that the same user and mailbox works on our Exchange 2007 server and the problem doesn't seem to be dependent on the version of MS Outlook or Word we are using.  The only thing that we can figure out thats different is we changed from Exchange 2007 (where it worked with Outlook 2003 and 2007) to Exchange 2010 (where it doesn't work with either Outlook 2003 or 2007).  We tried deleting the field in the word form and recreating it with no luck.  We did notice that the Notes field doesn't seem to show up any longer in the chooser when adding a mail merge field in our Word doc.  So my question is obviously, has anyone run into this and have a fix or did MS change the name of the Notes field and we are using the wrong one.

Any help would be really appeciated.


After upgrading to Exchange 2010, all users seem to be having the issue of sending out calendar appointments and they will show up as plain text to everyone. Then if they create another with just a couple invitees, it shows up good. Why would this be happening and how to fix? It has to be a setting within the new server itself, correct? Please help if you can. Thanks!


Hello guys,

two weeks ago we switched from Exchange 2003 to Exchange 2010 and since then a few users could not open shared mailboxes and calenders from different users anymore. If they delete the linked shares and put them up again it works. On the next day they can't access them anymore. They have to repeat the process again.

Do you have any idea?


Hi everybody,

I have a problem with this scenario,

We are migrating from Exchange 5.5 to 2003 in a Windows 2003 infrastructure.

After a mailbox is migrated, the next time the user opens it's Outlook
2000/2003 client it will pop up this message of "Trying to retrieve data
from Exchange Server".
This message was not appearing when the mailbox was in Exchange 5.5
Any idea if what is going on here?

Another problem is that we have some Outlook 97 clients. After migrating
this user mailboxes to 2003, this Outlook's 97 get randomly disconnected,
but as Outlook 97 dont have the reconnect feature the user must restart it
to get connected again. Do you know how to fix this?

Thanks for your help,


I want to load Outlook 2003 onto a new PC with Vista Home Basic. Is Outlook
2003 compatible with Vista, or do I need to upgrade to Outlook 2007?

Hi folks,


we recently moved from Exchange 2007 to Exchange 2010 and our Users who use OL2k3 experienced a problem with the mails received after the move.

After open Outllok all mail bodies of the mails received right after the Mailbox move are empty. But new mails which arrived after Outlook has been opened are displayed properly.


Also the subject and attachments are available. Just the body text dissappeard.


The Eventlog does not indicate any problem with the Replication of the Mailbox Move. Also the Move Request Properties shows "Number of bad items: 0" 


Is this a known problem?




Hello everyone, I have a question to the end of the migration process "Migrate Exchange 2003 to Exchange 2010".

I've installed a new Exchange Server 2010 in the present exchange 2003 organization. After this, I've moved all mailboxes and the public folder structure sucessfully. At the end, I've tried to uninstall the Exchange Server 2003, but I couldn't choose uninstall. An error message appears, that there are still some user mailboxes on the exchange server 2003. I've powered off the old Exchange Server 2003 for a few days whithout any errors in the exchange organization.
Si I've made a search on the AD and searched for mailboxes who lie on the old Exchange Server. The result shows, that there are email activated public folders and the distribution lists, which are stored on the old database.
So, how can I move this entries to the new Exchange 2010 Server, so it is possible to uninstall the exchange server 2003?

thanks for any comments!


Very soon company that i work for will migrate Exchange 2003 SP2 on Windows 2003 Standard SP2 to Windows SBS 2011. I would like to ask some professionals here are there any steps how to proceed.

I did full installation of Exchange Server 2010 and before I could do that I had to run setup tools like PrepareAdD PrepareDomain.

But Exchange 2010 with SP1 already comes preinstalled on SBS 2011 so I am not sure whether I still need to prepare domain with setup switches. SOme say we need to create answer file.

Are there any steps how to migrate this properly. I found steps for migrating to Exchange 2010 on Windows 2008 Enterprise edition but seems that migration to SBS 2011 is slightly different because Exchange 2010 is already installed on the server.

WIndowsw 2003 already of course setup and I would assume I dont need to prepare things with setup switches but create answer file to transfer it to new server.

But to stop guessing I would like to get opinion of the people that already did this. As I said Windows 2003 server is standard edition ( not SBS) but we will migrate to SBS 2011 from WIndows 2003 standard.

Any idea how to perform this operation

Thanks in advance

Hi All!

  I'm test migration from Exchange 2003 to Exchange 2010. Because documentation not describe this procedure i'm used this link in assumption that migration to Exchange 2010 similar to Exchange 2007
I'm successfully moved OAB, my admin mailbox, RUP to a new server, remove mailbox DB frpm old server, but when try replicate public folder structure nothing happen. When i go to Public Folder Store - Replication Status - all folder "In Sync" exept System Configuration and Public folder Hierarchy, thay are Local Modified. I'm try to wait for a few hours, reboot servers... nothing, replication not accur (replication schedule set to Always Run). What i do wrong?MCSE: M+S, SMS/SCCM, CCNA

Yesterday I installed SP1 to Exchange 2010 sucsesfully. Today start I receiving following warning. To correct this issue what I have to do? If you can give me command with syntax that would be appreciated.



Log Name:      Application
Source:        MSExchange ADAccess
Date:          19/12/2010 11:06:39 AM
Event ID:      2937
Task Category: Validation
Level:         Warning
Keywords:      Classic
User:          N/A
Computer:      itcES2010.itc.local
Process mmc.exe (PID=8780). Object [CN=David Citizen,OU=Users,OU=Stf,DC=itc,DC=local]. Property [HomeMTA] is set to value [itc.local/Configuration/Deleted Objects/Microsoft MTA
DEL:e935515e-50b7-49da-9054-c318904beb2d], it is pointing to the Deleted Objects container in Active Directory. This property should be fixed as soon as possible.
Event Xml:">
    CN=David Dean,OU=Users,OU=Stf,DC=itc,DC=local
    itc.local/Configuration/Deleted Objects/Microsoft MTA


We have just migrated an Exchange 2003 environment to a new server.

- moved all mailboxes, roles, public folders replicatied and so on
- stopped all exchange services on old server.

Now we have some outlook 2000 clients who try to open a shared calendar (a
calendar that already was opend in the past and now is just accessible
through a link). They get an error that the calendar is not accessible
If they go through the option "open calendar" and choose the user, it works.

Other clients, outlook 2003 doesnt have this problem.

Is there a way to fix this, or are these "links" only kept in the local ost



We have just migrated an Exchange 2003 environment to a new server.

- moved all mailboxes, roles, public folders replicatied and so on
- stopped all exchange services on old server.

Now we have some outlook 2000 clients who try to open a shared calendar (a
calendar that already was opend in the past and now is just accessible
through a link). They get an error that the calendar is not accessible
If they go through the option "open calendar" and choose the user, it works.

Other clients, outlook 2003 doesnt have this problem.

Is there a way to fix this, or are these "links" only kept in the local ost


I have developed some code in VB to write calendar entries into various
peoples' calendars on an Exchange server. However, after accessing these
calendars, a quicklink appears in Outlook 2003 (?and 2007) under 'Other
Calendars'. I want to remove these quicklinks as part of my VB code as a)
they clutter the appearance and detract from other shared quicklinks and b) I
don't want the activating person to realise that they are able to read the
other users' calendars.
Alternatively is there some way of writing appointments into another user's
calendar without having to set permissions to 'Read'. When I set the shared
calendar permissions only to 'Create items' I can't get the
'GetSharedDefaultFolder' function to work - I need to set the permissions to
'Ceate' and 'Read'
I know thethe quicklinks can be removed one at a time by right-clicking and
selecting 'Remove from other calendars' but this is time-consuming and
defeats reason b) above.
I have also looked at restarting Outlook with the /resetsharedfolders switch
but the required patch for Outlook has not been installed on our PCs by the
IT department (and they see no need to do so!)
Surely there is some way to remove these shared calendar links by code.

     I migrated from Exchange 2000 on old server to Exchange 2003 on a new server.  Everything is fine except 1 small issue.  The shared calendars can not be accessed if the old mailstore is dismounted.  The error message that appears is "Unable to display the folder.  The calendar could not be found."  ALSO, when I try to log onto a mailbox, I get a seperate error message.  Here's what I do.  I log onto a server as the domain admin, change the properties of Outlook to point to a mailbox I want to backup (say for a terminated employee).  When I do this, I receive the following error: "Unable to open your default e-mail folders.  You do not have permission to log on."  I then click OK and it asks if I want it to open my default file-system folders.  I tell it no and Outlook closes down.  This happens whether the mailstore is mounted or dismounted.

Does anyone know what happened to the permissions on the server when I migrated from the old box to the new one?  How can I log in as the administrator and be able to backup the mailboxes?  Currently I have to log in as the user, backup the email, then delete the account.  Also, how do I get the security back to where it was on the old mailserver?  Any help is appreciated.

Good Morning,

We have a strainge issue with Outlook2003 Clients and Exchange2010.

1 HW Loadbalancer (NLB.domain.local)
2 Exchange2010 SP1 (rollup 5) CAS servers in a CASArray
2 Exchange2010 SP1 (rollup 5) MBX servers in a DAG

autodiscover = NLB.domain.local
CAS-Array = NLB.domain.local (Members: CAS1 + CAS2)
Encryption = disabled

* Several Outlook2003 clients with connection problems (Connection Broken)
* Outlook2003 clients with shared calendars problems (some have more than 30 shared calendars)

So what we have done so far is:

* We created a new Throttling policy with value of 1000 to solve the problem opening multple shared calendars at once.

* To make sure it was not the HW Loadbalancer which was causing the connection problems, we removed(software wise) the HW Loadbalancer by creating 2 DNS records pointing to the 2 CAS servers and removed the DNS record with IP address of the HW Loadbalancer.

NLB.domain.local = IP of CAS1
NLB.domain.local = IP of CAS2

So all Outlook2003 clients are now "tweaked" to go directly to CAS1 or CAS2 (depending on which IP address was provided bij DNS server for NLB.domain.local)

We deleted and re-created a new Outlook2003 profile for one of the problem users. At first it worked but when logging in to another PC we got the Connection broken again. When we did a PING to NLB.domain.local we got a reply fom IP of CAS1. So we tweaked the localhost file to NLB.domain.local = IP address of CAS2 started Outlook2003 and we got connection to exchange. So our first reaction, CAS1 is the problem. to test this we changed IP in local hostfile to IP address of CAS1. And indeed Outlook2003 had a broken connection again.

So we removed the NLB.domain.local - IP address CAS1 from our DNS server.

All outlook2003 clients were now redirected to CAS2, and we thought problem solved........ but we guess..... it didn't solve the problem...... some Outlook2003 clients still had the connection broken problem, even after deleting there Outlook profile and recreating there outlook profile...... When tweaking the localhost file of these "new" problem users to IP of CAS1 they got connection again.......

I have no idea where to look anymored oes anyone have an idea what could cause this???


I have applied updates for the DST 2007 problem. Everything seems
fine with one exception. When I log into a shared calendar and view
it from my machine the recurring calendar shows off by an hour after
the DST switch this weekend.

If I log into a machine with the credentials of the calendar doing the
sharing everything is fine.

Any ideas?



I have Outlook 2003 SP2 and Exchange 2003 EE SP2 on Windows 2003
SP1,all with the latest security updates from beginning of may 2007
( actually for Outlook 2003 it didn't matter I have also some with no
security updates with the same problem )
User A is working in outlook in cached mode.
User B decides to share his calendar to User A
User A tries to open the shared calendar of User B and gets an
error :unable to display the folder .you do not have sufficient
permissions ...
User A tries again 10 minutes later , one hour later - same problem
User A logs off and on - same problem
User A does a full synchronize in outlook -same problem

Workaround I found: Edit the email settings of User A - turn off :
"use exchange cached mode"
restart Outlook
User A now can open the calendar of user B
(Now I can change the profile setting again of user A to cached mode
and everything seems to work now)

How can I fix this problem without changing the cached mode setting.
Is this a know bug ?
Can I make some sort of registry change so opening a shared calendar
goes directly to the server ?

Thanks for your help


We have a problem with using 2 agendas for 1 user.

This is the situation :

we have the main agenda in Outlook, wich we share, so other people also can
view the public agenda of each person and can add new appointments etc.
We already added also a personal agenda for everyone ( rigth click on
agenda, new map, insert a name and choose the agenda type ).
Untill there everything OK.

in this personal agenda, we place personal appointments, that the others
dont have to see ( for example : meeting with lawyers, talks with some
collegue etc ), but then occur 2 problems :

- it seems like we cant set an alarm on this personal agenda to notify us
from a new appointment. The popup that appears when wanting to save the new
appointment is translated something like : the appointment for "subject of
the appointment" cant be given because the item isnt placed in the map Agenda
or tasks, does it has to be ?. I can answer with yes and no. That aint the
meaning, so i say no, i com eback on the appointment, where i can check again
the notification box, save and get the same message again, if i say yes, then
the appointment is saved, but without notification.

- is it also possible that the personal and public ( shared ) agenda
interact with eachother ? For example : is it possible when there is in the
personal agenda an appointment at 10 am that when someone wants to add an
appointment in the public agenda on 10 am that they get a message : "already
planned in in the personal agenda" or something. I know that you already get
such a message when adding a second appointment in the public agenda on the
same time, buth it seems like this cant when using 2 agendas.

Anyone an id for the solution for these 2 problems ?
Is that possible with Outlook 2003 ? Or should i mail these problems to
Microsft HQ for suggestions for the next version of Outlook ?

Exchange 2003/Exchange 2010 SP1

Outlook 3003 SP3

I have a user who is accessing a bunch of shared calendars. Calendars that were shared prior to the migration to Exchange 2010 do not have an issue.(I have enabled encrypted communication on the Outlook 2003 client.) However, calendars created on any new mailboxes on Exchange 2010 are not visible, the message is 'Information Store is not available'.


Any inputs will be appreciated.

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