Latency leads to full system Failure in Exchange 2010 - Resolved in 2013?

My work encountered a bug - and for no lack of trying - I could not find any bug submission for Ex2010 anymore. Since Most programming relies on the foundation of the past - if replication service was implemented the same in 2013 than it could leave
to a full system failure.
The issue is something happened in REPLICATION service in such a fashion that it accepted a connection, and in the programming it set a variable to a LARGE NUMBER (fail closed) to replace for "Copy Queue
length" in the ball park of 922 quadrillion.
The service never updates this value because of its quasi-state and some timeout occurs and now the GOOD servers think their copy is ludicrously behind. This causes the GOOD servers to attempt to fail-over - as they believe their copy from the BAD
server has failed or perhaps another check fails...
[6 DAG pieces on 3 servers, 4 pieces per server]
In my scenario Server 3 holds:
1 part of server 2 <= Tells server 2 you're bad - don't fail over
1 part of server 1. <= Tells server 1 you're bad - don't fail over
2 parts its own <= "good" - though dead replication service
As I do not know if this exploitable by simply placing a listener in place of replication service to accept and do not respond to connections - I do not know. However, there is a "bug" or flaw in my opinion to allow 1 bad server to superceed
two good servers based on a partial service crash. Simply stopping replication service on Server 3 allowed Server 1 / 2 to take over with out issue - I then restarted replication service and no issue since.
Since i wasted an hour looking where to submit this - this forum will hopefully do - I am very much a white hat - but I am dislike the non-simple way before me to disclose said information to the creator. I want my hour back for their non-intuitive
process, or maybe the simply don't care about Exchange 2010.
- Dan

Please note "LATENCY" in my topic is not network but inter-process on a single host, and is used as saying a timeout occurs without value.

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Mailbox Migration Failure for Exchange 2010 to 2010 latest SP and Rollup

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10/12/2014 11:36:32 PM [CAS1] A corrupted item was encountered during the move operation. The item wasn't copied to the destination mailbox.
<baditem errorType="MapiExceptionInvalidParameter" errorCode="0x80070057" flags="0x00000000" id="000000004BA135250C952443B11655B7F71ABAC6070007BFF2DC839F1443BD2C542D104D64790000003036DA000007BFF2DC839F1443BD2C542D104D647900004361F8040000">
<folder id="000000004BA135250C952443B11655B7F71ABAC6010007BFF2DC839F1443BD2C542D104D64790000003036DA0000">Inbox</folder>
<sender>Microsoft Outlook</sender>
<recipient>Joe</recipient>
<subject>ICON 2.5%   46.125-46.875 vs 2.99</subject>
<messageClass>IPM.Note</messageClass>
<size>1609</size>
<dateSent>06/24/2014 12:38:04</dateSent>
<dateReceived>06/24/2014 12:38:04</dateReceived>
<errorMessage>MapiExceptionInvalidParameter: IExchangeFastTransferEx.TransferBuffer failed (hr=0x80070057, ec=-2147024809)
Diagnostic context:
    Lid: 55847   EMSMDBPOOL.EcPoolSessionDoRpc called [length=8259]
    Lid: 43559   EMSMDBPOOL.EcPoolSessionDoRpc returned [ec=0x0][length=677][latency=0]
    Lid: 23226   --- ROP Parse Start ---
    Lid: 27962   ROP: ropFXDstCopyConfig [83]
    Lid: 27962   ROP: ropTellVersion [134]
    Lid: 27962   ROP: ropFXDstPutBufferEx [157]
    Lid: 17082   ROP Error: 0x80070057
    Lid: 31329
    Lid: 21921   StoreEc: 0x80070057
    Lid: 27962   ROP: ropExtendedError [250]
    Lid: 1494    ---- Remote Context Beg ----
    Lid: 1238    Remote Context Overflow
    Lid: 27676   dwParam: 0x1A8000
    Lid: 36537   dwParam: 0x1A8000
    Lid: 5587    StoreEc: 0x8004010F PropTag: 0x1A8000
    Lid: 33375   StoreEc: 0x8004010F
    Lid: 17146   StoreEc: 0x8004010F
    Lid: 27676   dwParam: 0x1A8000
    Lid: 36537   dwParam: 0x1A8000
    Lid: 5587    StoreEc: 0x8004010F PropTag: 0x1A8000
    Lid: 33375   StoreEc: 0x8004010F
    Lid: 17146   StoreEc: 0x8004010F
    Lid: 50223
    Lid: 14012   StoreEc: 0x80070057
    Lid: 39487
    Lid: 33551   StoreEc: 0x80070057
    Lid: 49935
    Lid: 55871   StoreEc: 0x80070057
    Lid: 48163
    Lid: 64547   StoreEc: 0x80070057
    Lid: 36807
    Lid: 53645   StoreEc: 0x80070057
    Lid: 36097   StoreEc: 0x80070057
    Lid: 6993    StoreEc: 0x80070057
    Lid: 4921    StoreEc: 0x80070057
    Lid: 17200   StoreEc: 0x80070057
    Lid: 41725
    Lid: 2761    StoreEc: 0x80070057
    Lid: 28570   StoreEc: 0x80070057
    Lid: 29738
    Lid: 3401    StoreEc: 0x80070057
    Lid: 1750    ---- Remote Context End ----
    Lid: 26849
    Lid: 21817   ROP Failure: 0x80070057
    Lid: 22630 </errorMessage>
<errorContext>--------
Operation: IMapiFxProxy.ProcessRequest
OpCode: TransferBuffer
DataLength: 16347
Operation: IMapiFxProxy.ProcessRequest
OperationSide: Target
Primary (d40cec8b-1128-4f50-923b-0822538abe36)
OpCode: TransferBuffer
DataLength: 16347</errorContext>
</baditem>

Hi,
Please try to use Outlook switches with /cleanfinders, /cleanreminders and /resettodobar to check this issue. Usually the corrupted items were default mailbox folders, especially search folders.
Refer to the similar thread.
https://social.technet.microsoft.com/Forums/en-US/89902f00-4b84-4f10-b909-121a81241c85/can-not-move-exchange-2003-mailboxes-to-exchange-2010?forum=exchangesvrdeploylegacy
Best Regards.

Microsoft Exchange 2010 and Outlook 2013

My colleagues computer suddenly crashed yesterday and it wouldn't restart without a system restore.
Now when we try to open up Outlook it says that you must connect to Microsoft Exchange at least once before you can usse your Outlook Data file (.ost)
Also The PC has lost the trust relationship on the domain
We have exchange 2010 and the servers OS is Microsoft Windows Small Business Server 2011 and the Client PC is running off of Windows 8.
Can you please help me resolve this issue?
kind regards
Steve Bradshaw
[email protected]

It might be possible that the MAPI key (which enables Outlook to synchronize with Exchange) has been deleted due to the System crash. So, in order to establish the connection, you need to Reconnect the OST file to the original MAPI profile and then reconnect
then MAPI profile to Exchange Server.
If the above method fails to resolve the issue, then the best option for you would be to take the help of any professional OST to PST Conversion Software, which will help you to Extract data from your OST file and convert it to PST file which you can import
back to your Outlook to establish the connection with Exchange Server again.
You can check this
presentation for more info.

Exchange 2010 and Outlook 2013

please read my question and comments carefully before replying.
We just upgraded to Outlook 2013 x64bit and exchange 2010. there is only one exchange server with all updates and fixes installed, and Outlook is up-to-date as well.
User A sends a meeting request with tentative appointment to user B
User B accepts the appointment and it shows on his calendar as tentative
User A changes the appointment from tentative to out of the office or busy and sends update to user B
User B receives the update and click on No Response Required
User B's calendar does NOT change from tentative to out of the office or busy.......
we tried OWA as well as tried this in cached mode and online mode and made no difference.
you can see that communiation is real time between the two clients and exchange because as a test, I changed the words and client machine immediately updated but the free/busy/out of the office status never changes unless you change the time of the appointment.
Please let me know
David

Hi David,
It is by design.
The Free/Busy status is a private property that can be changed but
only with a full update. A full update is practically a new meeting invitation to the same event, replacing the old properties with the new ones. Full updates are sent when one or more of the following properties are changed:
Start Date/Time
End Date/Time
Recurrence
If you only send a update about free/busy status, it is an informational update instead of a full update. Thus, the free/busy status of the meeting is unchanged. For more information about meeting updates, we can refer to the following blog:
http://blogs.technet.com/b/outlooking/archive/2012/06/11/understanding-meeting-updates.aspx
If you have any feedback for TechNet Subscriber Support, contact
[email protected]
Best Regards,
Winnie Liang
TechNet Community Support

Exchange 2013 - can no longer move mailboxes from Exchange 2010 to Ex 2013.

Migrating to Exchange 2013 from Exchange 2010. Created Ex 2013, moved some mailboxes OK. Then could no longer move mailboxes. No errors. The Migration email says complete. Synced: none, Total Mailboxes: none.
Tried several mailboxes. Same result.
Ex 2010 is SP3 RU6, (at least it says RU6 is installed in Programs/Features. The build is for SP3 w/o RU6???)
Ex 2013 is SP1 aka CU4.
How to proceed???
john11

After many attempts to fix the issue (move remaining 4 mailboxes from Exchange 2010 to Exchange 2013) I contacted Microsoft and we resolved the issue. Here's how.
btw - Thanks for the suggestions from Ed. However, they did not seem to move us forward.
What did work:
1. On the Exchange 2010 box, create a new database. (Someone else suggested this also). Then move the remaining Exchange 2010 mailboxes to this new db. Then after that, move the 4 mailboxes to Exchange 2013 using the GUI on Ex 2013. This only worked for one
of the four mailboxes. The other 3 failed.
2. Apparently, we need to restart the Microsoft Exchange Mailbox Replication service on the Exchange 2013 after several failed move attempts to clear cache related to the moves.
3. Then on the Exchange 2013 box, use this Exchange shell command:
New-MoveRequest -identity "[email protected]" -TargetDatabase "Exchange 2013 DB name" -BadItemLimit '500' -verbose
This moved the remaining 3 mailboxes including the Discovery mailbox. It took some time. But we could check the progress using
Get-MoveRequest
The MS Tech was terrific. Really knew his stuff. And all mailboxes are on Exchange 2013. Well, the last one is still moving, but I am optimistic.
Thanks for the suggestions. I had to get this done and the MS Tech made that happen.
john11

Exchange 2010 Migration to 2013 Coexistence url's

Hello,
What exactly is required for the virtual directory url setup for Exchange 2010 coexisting with Exchange 2013? I have been searching online a lot preparing for my Exchange 2013 deployment and can't see to find a clear answer. The information
I have come across from TechNet and other sources is all over the place with some stuff saying the external url needs to be empty while others say it should match Exchange 2013's setup. Others say the internal url should be empty while
only the external should be populated. And I have even seen others say nothing on Exchange 2010 has to be touched and that Exchange 2013 will figure proxying out on its own once I configure the new url's on it.
So what is supposed to be setup for the ExternalUrl and InternalURL to in Excahnge 2010 for coexistence with 2013? Currently my
existing Exchange 2010 is internet facing with the plan of moving that to Exchange 2013 once that goes in as per Microsoft directions on implementing coexistence.

Read the article below from Ross Smith. There can't be better article than this:
http://blogs.technet.com/b/exchange/archive/2014/03/12/client-connectivity-in-an-exchange-2013-coexistence-environment.aspx
If exchange 2010 and 2013 are on same site, then you need to:
1. Remove External URL from Exchange 2010 CAS servers, retain the Internal URL
2. Move the SSL certificates from Exchange 2010 to Exchange 2013
3. Point the external URL to Exchange 2013 instead of Exchange 2010
4. Of course, you would need to re-configure Autodiscover, Web Services URLs on Exchange 2013 CAS servers.
Once this is done, for any mailbox that is hosted on Exchange 2010, Exchange 2013 would proxy the connections and deliver the content.
- Sarvesh Goel - Enterprise Messaging Administrator

Upgraded to Exchange 2010 now outlook 2013 can't connect externally

Outlook 2013 used to connect to my exchange server via our TMG before upgrading to 2010. At first the clients were changed back to NTLM all the time but I fixed that and we now see basic with SSL. Now we get repeated logon.
I have used rpc connectivity analyser and it tells me that my (self issued) certificate doesn't chain properly - but the signing certificate is loaded on the client (by Enterprise CA policy) and looking at the mail server certificate in the certificate manger
reports the certificate to be good and correctly shows the chain (so is this a problem in the anyalyzer or does outlook constrcut its certificate chain using a different code library than say IE?).
Oddly Windows 8.1's mail cient works flawlessly when outlook 2013 goes into loops?
Any suggestions?
ICHC

Hi ICHC,
Just as Ed said, we should create new rule on TMG during the upgrading.
Found an blog for your reference:
Upgrade from Exchange 2007 to Exchange 2010 - Part II
https://www.simple-talk.com/sysadmin/exchange/upgrade-from-exchange-2007-to-exchange-2010---part-ii/
Disclaimer:
Microsoft is providing this information as a convenience to you. The sites are not controlled by Microsoft. Microsoft cannot make any representations regarding the quality, safety, or suitability of any software of information found there. Please make sure
that you completely understand the risk before retrieving any suggestions from the above link.
Thanks
Mavis
Mavis Huang
TechNet Community Support

Decommissioning Exchange 2010 Casarray (contains 2013 Mailbox Servers?)

I'm in the process of decommissioning exchange 2010. I went to remove the 2010 casarray and see that my 2013 mailbox servers are a part of the array? Can I still remove the array? Do I leave it?

Hi,
Please have a look in to the below mentioned article especially the reply from Off2work
http://social.technet.microsoft.com/Forums/office/en-US/c10550fa-b735-48ee-ad52-a75f0176e1de/cas-array-in-exchange-2013?forum=exchangesvrdeploy
As an additional info , as per my knowledge there is no use of cas array in exchange 2013 and at the same time exchange 2013 servers will not make use of it even though if it is an member of an casarray in exchange 2010.
Please reply me if you have any queries .
Regards
S.Nithyanandham
Thanks S.Nithyanandham

Microsoft Exchange 2010 / Office Pro 2013 - Contact Issues

Good Morning Everyone.
We are running MS Exchange 2010 and have recently upgraded all our clients to MS Office 2013 Pro from Office 2007.
We've had problems with people being able to access previously accessible share folders etc. but we've managed to resolve them. What we are having problems with are peoples personal contacts....
Within Outlook If we click "New Email", then we click "To", choose address book and select "Contacts" (Personal contacts) we receive the error:
"The Address list cannot be displayed. The contacts folder associated with this address list could not be opened; it may have been moved or deleted, or you do not have permissions. For information on how to remove this folder from
the outlook address book, see Microsoft Outlook Help"
The unusual thing is, if we go to the people tabs at the bottom (Mail, Calender, People etc") Then we can access the address book without issue?
Any help would be appreciated, this problem is on every single client...
Regards
Steve Skingle

Hi,
Please make sure the Contact folder is enabled as an email address book in Outlook. We can check this by right-clicking on the personal contact folder, select
Properties, then Outlook Address Book tab.
Check if the “Show this folder as an email Address Book” option is ticked. If not, tick it and restart Outlook to check the result.
Please let me know the result.
Steve Fan
TechNet Community Support

Audit failures on Exchange 2010 and password prompts in outlook

Starting last Thursday after I patched my domain controllers and other Windows systems and rebooted my Outlook users are being prompted for username/password continuously and my Exchange security logs reflect audit failures for NTLM which I think is triggering
the prompt. The same users also have an audit success via Kerberos.
If the password prompt it cancelled Outlook can send and receive email just fine but the box continues to pop up occasionally.
I've worked on this for several days now and can't figure it out. The audit logs on the DC's are clean with no audit failures.
The issue is also affecting Visual Studio users who log into a Team Foundation Server, they are continually prompted for credentials and can't get in and the audit logs show the same thing.
I don't think this is an Exchange specific issue but more of a broader authentication problem.
Can anyone shed any light on this?
An account failed to log on.
Subject:
Security ID: NULL SID
Account Name: -
Account Domain: -
Logon ID: 0x0
Logon Type: 3
Account For Which Logon Failed:
Security ID: NULL SID
Account Name: mart.marc
Account Domain: AOF
Failure Information:
Failure Reason: An Error occured during Logon.
Status: 0xc000006d
Sub Status: 0x0
Process Information:
Caller Process ID: 0x0
Caller Process Name: -
Network Information:
Workstation Name: AOG-LP047
Source Network Address: 10.10.1.159
Source Port: 50075
Detailed Authentication Information:
Logon Process: NtLmSsp
Authentication Package: NTLM
Transited Services: -
Package Name (NTLM only): -
Key Length: 0

Hi,
It is a known issue if you install the following security updates on March 10, 2015:
http://support.microsoft.com/en-us/kb/3002657
The user would be prompted with credentials when NTLM is used to authenticate these Active Directory domain users and services.
We can remove this patch from all the DCs manually and check whether the issue persists.
Regards,
Please remember to mark the replies as answers if they help, and unmark the answers if they provide no help. If you have feedback for TechNet Support, contact [email protected]
Winnie Liang
TechNet Community Support

Auto-Mapping with Full Access Mailboxes-not working in exchange 2010 clients outlook 2013

hello, I have exchange server 2010, the clients are running outlook 2013, I set an mailbox for automapping (full access) but when i restart client it does not appear in the client. i also did the command in the exchange shell, no errors. how can i fix this.

no sp info shows with the
Get-ExchangeServer | Format-List Name, Edition, AdminDisplayVersionName
Edition : Enterprise
AdminDisplayVersion : Version 14.0 (Build 639.21)
chart says
Exchange Server 2010 November 9, 200914.00.0639.021
is that the issue need sp 1?

Exchange 2010 onprem to 2013 on prem cross forest LARGEITEMLIME issue

ok i have started migrating some of our users over, however some are failing due to large files.
I know that i can use the -LargeItemLimt switch to have the migration "SKIP" those files. (there seems to be alot of misconception that this will actually COPY the files & the value that you define is the MB limit. this is incorrect,
& this switch just tells the migration that it is ok to skip X (the value you define) amount of messages.)
Ok so now that that is out of the way
how or where would one configure to ALLOW mailboxes to be migrated over that contain large files? Is it in the transport/send/receive connectors size limits? is it else where?
I rather temp allow large files to complete my migrations & copy those files over, rather then skipping those files, & essentially loosing them for ever.

Now here is the thing, "AllowLargeItemLimit" is still mystery (to me at least)
But you can update the size of Send and Receive Connector on 2013 and should work
Set-TransportConfig -MaxSendSize 100MB -MaxReceiveSize 200MB
Get-ReceiveConnector | Set-ReceiveConnector -MaxMessageSize 200MB
Get-SendConnector | Set-SendConnector -MaxMessageSize 200MB
http://www.msexchange.org/articles-tutorials/exchange-server-2013/mobility-client-access/exchange-2013-local-mailbox-moves-part1.html
Cheers,
Gulab Prasad
Technology Consultant
Blog:
http://www.exchangeranger.com    Twitter:
  LinkedIn:
   Check out CodeTwo’s tools for Exchange admins
Note: Posts are provided “AS IS” without warranty of any kind, either expressed or implied, including but not limited to the implied warranties of merchantability and/or fitness for a particular purpose.

Failure installing SP3 on Exchange 2010

Good evening,
Following TechNet closely I'm currently in the process of moving my exchange 2010 environment to 2013. I have single exchange server on a SBS 2011 box. Sadly I've failed at the first hurdle installing SP3, the result is that my Exchange 2010
is refusing all client connections.
During the SP3 install I passed all prerequisites but during the actual upgrade it failed at the Hub Transport Role with the following error:
Summary: 8 item(s). 3 succeeded, 1 failed.
Elapsed time: 00:20:46
Language Files
Completed
Elapsed Time: 00:10:25
Restoring services
Completed
Elapsed Time: 00:00:02
Languages
Completed
Elapsed Time: 00:03:32
Hub Transport Role
Failed
Error:
The following error was generated when "$error.Clear();
          Write-ExchangeSetupLog -Info "Creating SBS certificate";
          $thumbprint = [Microsoft.Win32.Registry]::GetValue("HKEY_LOCAL_MACHINE\Software\Microsoft\SmallBusinessServer\Networking", "LeafCertThumbPrint", $null);
          if (![System.String]::IsNullOrEmpty($thumbprint))
            Write-ExchangeSetupLog -Info "Enabling certificate with thumbprint: $thumbprint for SMTP service";
            Enable-ExchangeCertificate -Thumbprint $thumbprint -Services SMTP;
            Write-ExchangeSetupLog -Info "Removing default Exchange Certificate";
            Get-ExchangeCertificate | where {$_.FriendlyName.ToString() -eq "Microsoft Exchange"} | Remove-ExchangeCertificate;
            Write-ExchangeSetupLog -Info "Checking if default Exchange Certificate is removed";
            $certs = Get-ExchangeCertificate | where {$_.FriendlyName.ToString() -eq "Microsoft Exchange"};
            if ($certs)
              Write-ExchangeSetupLog -Error "Failed to remove existing exchange certificate"
          else
            Write-ExchangeSetupLog -Warning "Cannot find the SBS certificate";
        " was run: "The certificate with thumbprint 355E62E464DCF42A08BCB7A8CF39C819D42B760E was not found.".
The certificate with thumbprint 355E62E464DCF42A08BCB7A8CF39C819D42B760E was not found.
Click here for help...
http://technet.microsoft.com/en-US/library/ms.exch.err.default(EXCHG.141).aspx?v=14.3.123.3&e=ms.exch.err.Ex88D115&l=0&cl=cp
Elapsed Time: 00:06:46
Client Access Role
Cancelled
Mailbox Role
Cancelled
Management Tools
Cancelled
Finalizing Setup
Cancelled
The setup log shows the following details:
Ending processing Get-ExchangeCertificate
[07/31/2013 20:50:46.0516] [1] The following 1 error(s) occurred during task execution:
[07/31/2013 20:50:46.0516] [1] 0. ErrorRecord: The certificate with thumbprint 355E62E464DCF42A08BCB7A8CF39C819D42B760E was not found.
[07/31/2013 20:50:46.0516] [1] 0. ErrorRecord: System.InvalidOperationException: The certificate with thumbprint 355E62E464DCF42A08BCB7A8CF39C819D42B760E was not found.
[07/31/2013 20:50:46.0531] [1] [ERROR] The following error was generated when "$error.Clear();
          Write-ExchangeSetupLog -Info "Creating SBS certificate";
          $thumbprint = [Microsoft.Win32.Registry]::GetValue("HKEY_LOCAL_MACHINE\Software\Microsoft\SmallBusinessServer\Networking", "LeafCertThumbPrint", $null);
          if (![System.String]::IsNullOrEmpty($thumbprint))
            Write-ExchangeSetupLog -Info "Enabling certificate with thumbprint: $thumbprint for SMTP service";
            Enable-ExchangeCertificate -Thumbprint $thumbprint -Services SMTP;
            Write-ExchangeSetupLog -Info "Removing default Exchange Certificate";
            Get-ExchangeCertificate | where {$_.FriendlyName.ToString() -eq "Microsoft Exchange"} | Remove-ExchangeCertificate;
            Write-ExchangeSetupLog -Info "Checking if default Exchange Certificate is removed";
            $certs = Get-ExchangeCertificate | where {$_.FriendlyName.ToString() -eq "Microsoft Exchange"};
            if ($certs)
              Write-ExchangeSetupLog -Error "Failed to remove existing exchange certificate"
          else
            Write-ExchangeSetupLog -Warning "Cannot find the SBS certificate";
        " was run: "The certificate with thumbprint 355E62E464DCF42A08BCB7A8CF39C819D42B760E was not found.".
[07/31/2013 20:50:46.0531] [1] [ERROR] The certificate with thumbprint 355E62E464DCF42A08BCB7A8CF39C819D42B760E was not found.
[07/31/2013 20:50:46.0531] [1] [ERROR-REFERENCE] Id=SbsBridgeHeadComponent___6464a0ee0fd04f6b893a3c81d7eb3f26 Component=EXCHANGE14:\Current\Release\Shared\Datacenter\Setup\SBS
[07/31/2013 20:50:46.0531] [1] Setup is stopping now because of one or more critical errors.
[07/31/2013 20:50:46.0531] [1] Finished executing component tasks.
[07/31/2013 20:50:46.0594] [1] Ending processing Install-BridgeheadRole
My application event log is flooded with the following error:
Log Name:      Application
Source:        Microsoft-Windows-IIS-W3SVC-WP
Date:          31/07/2013 21:59:43
Event ID:      2280
Task Category: None
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      SRV-SBS.lawrencedavid.local
Description:
The Module DLL C:\Program Files\Microsoft\Exchange Server\V14\ClientAccess\Owa\auth\exppw.dll failed to load. The data is the error.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
    <Provider Name="Microsoft-Windows-IIS-W3SVC-WP" Guid="{670080D9-742A-4187-8D16-41143D1290BD}" EventSourceName="W3SVC-WP" />
    <EventID Qualifiers="49152">2280</EventID>
    <Version>0</Version>
    <Level>2</Level>
    <Task>0</Task>
    <Opcode>0</Opcode>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2013-07-31T20:59:43.000000000Z" />
    <EventRecordID>975085</EventRecordID>
    <Correlation />
    <Execution ProcessID="0" ThreadID="0" />
    <Channel>Application</Channel>
    <Computer>SRV-SBS.lawrencedavid.local</Computer>
    <Security />
</System>
<EventData>
    <Data Name="ModuleDll">C:\Program Files\Microsoft\Exchange Server\V14\ClientAccess\Owa\auth\exppw.dll</Data>
    <Binary>05000000</Binary>
</EventData>
</Event>
I've tried to re-register exppw.dll following instructions in the TechNet forums but this hasn't helped to restore functionality or complete the SP3 installation. Any guidance would be most appreciated. Thanks in advance!

Hi RicChapman,
From the event log files, I recommend you do as follows to check the result.
1.disabling all the exchange services
2.clearing both the apps and system logs
3.restarting the server
4.reinstall the Exchange 2010 SP3
Here are some case threads for your reference.
exchange 2010 SP2 failed in SBS 2011 Standard Ed
http://social.technet.microsoft.com/Forums/en-US/018bacbd-cbec-4117-82e2-7247eba57099/exchange-2010-sp2-failed-in-sbs-2011-standard-ed
The Module DLL C:\Program Files\Microsoft\Exchange Server\V14\ClientAccess\Owa\auth\exppw.dll failed to load
http://social.technet.microsoft.com/Forums/exchange/en-US/686d1a90-a016-4a4c-ae2e-6725914a5d5a/the-module-dll-cprogram-filesmicrosoftexchange-serverv14clientaccessowaauthexppwdll-failed
Additional article for your reference.
Exchange Server 2010 is in evaluation mode after installation or repair in SBS 2011 Standard
http://support.microsoft.com/kb/2527626
Hope it helps.
Best regards,
Amy

Re-Syn Outlook folder back to Exchange 2010

Last week we had to do a full restore of our Exchange 2010 server using Windows Server Backup. Unfortunately the backup did not have a current backup of Applications (Exchange or SharePoint), which is a whole other issue. This restore was on Jan. 17th and
the most current backup that contained Exchange was Jan 6th. Needless to say we lost about 2 weeks of email on the server. However those emails did stay on all our in-house users PC's in their Outlook 2010.
My question is, how can I move those cached emails from their Outlook folder back over to the server? Some people do use OWA and it would be great if they could see those emails saved in Outlook.

Hi,
Please check whether you can view the missing messages in OWA. If the missing emails also cannot be viewed in OWA but only in Outlook, we can follow
Sunil _Kumar’s suggestion to export the missing emails to a .pst file from users’ PCs, then import it to users’ mailbox.
For your reference, here is an article about how to import PST Files into Mailboxes with Exchange 2010:
http://exchangeserverpro.com/exchange-2010-import-pst-files-mailboxes/
Thanks,
Winnie Liang
TechNet Community Support

Outlook 2013/Exchange 2010 Free/Busy access issues.

Good Day Everyone,
I am running a Win 2008 R2 environment with Win7 users, using Exchange 2010 and Outlook 2013. Last week my users started experiencing issues with being able to view Free/Busy in the Calendar for any other user. I have checked past issues with this with patches
KB 2837618 and KB 2837643. Neither patch is showing as installed and I have tried a nummber of the suggested fixes offered for that issue to no avail. OWA seems to be working just fine.
Our Outlook version is: 15.0.4605.1003
I need a fix for Outlook users and since I havve 140 users, individual fixes are a not realistic option.
Any assistance would be greatly appreciated.

Hi,
Please test if Out of Office feature works well in Outlook. If Out of Office doesn't work either, it should be Autodiscover related.
Once Autodiscover has not been configured properly, the Free/Busy information may not display correctly. If you are also seeing issues with Out of Office assistant, we may assume that you haven’t correctly setup Autodiscover, since these two symtoms are
common when Autodiscover is not configured correctly.
To verify that, please test Outlook Autodiscover Connectivity:
http://technet.microsoft.com/en-us/library/bb123573.aspx
We can also learn Configure Exchange Services for the Autodiscover Service from:
http://technet.microsoft.com/en-us/library/bb201695.aspx
Regards,
Melon Chen
TechNet Community Support

Latency leads to full system Failure in Exchange 2010 - Resolved in 2013?

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