.NET Questions and Solutions

Symptoms
After you create new mailboxes in a Microsoft Exchange Server 2007 environment or you migrate mailboxes from Exchange Server 2003 to Exchange 2007, some users cannot access Exchange 2007 Outlook Web Access (OWA).
When this issue occurs, these users can enter their credentials on the Forms Based Authentication (FBA) page. On the language page, these users can select their language and their time zone. However, after these users click OK, the following error message appears:

A problem occurred while trying to use your mailbox. Please contact technical support for your organization.
Request
Url: https://<cas_server>:443/owa/lang.owa
User host address: <IP address>
Exception
Exception type: Microsoft.Exchange.Data.Storage.StoragePermanentException
Exception message: There was a problem accessing Active Directory.
Call stack
Microsoft.Exchange.Data.Storage.ExchangePrincipal.Save() Microsoft.Exchange.Clients.Owa.Core.RequestDispatcher.DispatchLanguagePostLocally(OwaContext owaContext, OwaIdentity logonIdentity, CultureInfo culture, String timeZoneKeyName, Boolean isOptimized) Microsoft.Exchange.Clients.Owa.Core.RequestDispatcher.DispatchLanguagePostRequest(OwaContext owaContext) Microsoft.Exchange.Clients.Owa.Core.RequestDispatcher.PrepareRequestWithoutSession(OwaContext owaContext, UserContextCookie userContextCookie) Microsoft.Exchange.Clients.Owa.Core.RequestDispatcher.InternalDispatchRequest(OwaContext owaContext) Microsoft.Exchange.Clients.Owa.Core.RequestDispatcher.DispatchRequest(OwaContext owaContext) System.Web.HttpApplication.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)
Resolution
This problem occurs because the discretionary access control list (DACL) inheritance is disabled on the user account in Active Directory. The Exchange Servers group must have permissions to write the msExchUserCulture attribute on the user when the language has been specified in OWA.

Symptoms
When you use a Collaboration Data Objects (CDO) 1.21-based application to call the Respond method on the parent of a recurring meeting request, the application will throw the following CDO exception:

[MAPI_E_NOT_FOUND (8004010F)]
Resolution
Hotfix information A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.
If the hotfix is available for download, there is a “Hotfix download available” section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.
Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or tocreate a separate service request, visit the following Microsoft Web site:
http://support.microsoft.com/contactus/?ws=support(http://support.microsoft.com/contactus/?ws=support)Note The “Hotfix download available” form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.Prerequisites Because of file dependencies, this hotfix requires Microsoft Exchange Server 2003 Service Pack 2.
For more information about the latest service packs for Exchange Server 2003, click the following article number to view the article in the Microsoft Knowledge Base:
836993?(http://support.microsoft.com/kb/836993/) How to obtain the latest service packs for Exchange Server 2003Restart requirementYou do not have to restart thecomputer after you apply this hotfix. Hotfix replacement informationThis hotfixdoes not replace any other software updates.File informationThe English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatformCdo.dll6.5.7651.38717,82426-Jul-200616:29×86

Symptoms
The Exchange IMAP4 worker process crashes intermittently on a computer that is running Microsoft Exchange Server 2007. When this problem occurs, an event is logged that resembles the following:

Event Type: Error
Event Source: .NET Runtime 2.0 Error Reporting
Event Category: None
Event ID: 5000
Description: EventType clr20r3, P1 microsoft.exchange.imap4.exe, P2 8.1.278.2, P3 481f7feb, P4 microsoft.exchange.imap4, P5 8.0.0.0, P6 481f7feb, P7 a6, P8 17, P9 system.nullreferenceexception, P10 NIL.
For more information, see Help and Support Center at
http://go.microsoft.com/fwlink/events.asp.
Resolution
To resolve this problem, install Update Rollup 4 for Exchange Server 2007 Service Pack 1 (SP1) on the Exchange server.For more information about Update Rollup 4 for Exchange Server 2007 Service Pack 1, see the following Exchange Help topic:
Description of Update Rollup 4 for Exchange Server 2007 Service Pack 1 (http://go.microsoft.com/fwlink/?LinkId=152556)For more information about how to obtain the latest Exchange service pack or update rollup, see the following Exchange Help topic:
How to Obtain the Latest Service Pack or Update Rollup for Exchange 2007(http://go.microsoft.com/fwlink/?LinkId=152570)

Symptoms
When you try to use the Microsoft Exchange Server ActiveSync Web Administration tool to delete a partnership with a mobile device or to perform a Remote Wipe operation on a mobile device, you receive the following error message:

Failed to access user’s Mailbox, verify that the mailbox and user account are enabled and functional.
Server Error in ‘/MobileAdmin’ Application.
——————————————————————————–
The remote server returned an error: (401) Unauthorized.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Net.WebException: The remote server returned an error: (401) Unauthorized.
Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
Stack Trace:
[WebException: The remote server returned an error: (401) Unauthorized.]
System.Net.HttpWebRequest.CheckFinalStatus() +680
System.Net.HttpWebRequest.EndGetRequestStream(IAsyncResult asyncResult) +74
System.Net.HttpWebRequest.GetRequestStream() +234
Microsoft.Exchange.AirSync.Admin.Mailbox.propFindRequest(String deviceUri) +240
Microsoft.Exchange.AirSync.Admin.Mailbox.getDevices() +194
Microsoft.Exchange.AirSync.Admin.Devices.refreshDevicesTable() +135
Microsoft.Exchange.AirSync.Admin.Devices.Page_Load(Object sender, EventArgs e) +190
System.Web.UI.Control.OnLoad(EventArgs e) +67
System.Web.UI.Control.LoadRecursive() +35
System.Web.UI.Page.ProcessRequestMain() +750
——————————————————————————–
Version Information: Microsoft .NET Framework Version:1.1.4322.2300; ASP.NET Version:1.1.4322.2300
Resolution
This issue occurs if one or both of the following conditions are true:Integrated Windows authentication is not enabled on the Exadmin virtual directory on the mailbox server.
Note In a front-end/back-end (FE/BE) Exchange configuration, this issue occurs if Integrated Windows authentication is not enabled on the Exadmin virtual directory on the back-end server.The MobileAdmin Web application is not running under the ExchangeApplicationPool application pool.

Symptoms
You modify the Microsoft Office Outlook Web Access user interface by following the steps in the “Specifying Icons for Custom Content Items” section of the following Microsoft Web site:
http://msdn2.microsoft.com/en-us/library/bb891875(EXCHG.80).aspx(http://msdn2.microsoft.com/en-us/library/bb891875(EXCHG.80).aspx)When you use Outlook Web Access to browse to a Microsoft Exchange Server 2007 mailbox, an exception that blocks the regular operation occurs. Additionally, the following events are logged in the Application event log:
Event Type: Error
Event Source: MSExchange Common
Event Category: General
Event ID: 4999
Description:
Watson report about to be sent to dw20.exe for process id: <process ID>, with parameters: E12IIS, <processor>, <version>, OWA, M.E.C.Owa, M.E.C.O.C.ThemeManager.RenderThemeFilePath, System.IndexOutOfRangeException, <address>, <version>. ErrorReportingEnabled: True
Event Type: Error
Event Source: Microsoft Exchange Server
Event Category: None
Event ID: 5000
Description:
EventType e12iis, P1 <processor>, P2 <version>, P3 owa, P4 m.e.c.owa, P5 m.e.c.o.c.thememanager.renderthemefilepath, P6 system.indexoutofrangeexception, P7 <address>, P8 <version>, P9 NIL, P10 NIL.
Resolution
To resolve this problem, install Update Rollup 2 for Exchange Server 2007 Service Pack 1. For more information about Update Rollup 2 for Exchange Server 2007 Service Pack 1, see the following Exchange Help topic:
Description of Update Rollup 2 for Exchange Server 2007 Service Pack 1 (http://go.microsoft.com/fwlink/?LinkId=152558)For more information about how to obtain the latest Exchange service pack or update rollup, see the following Exchange Help topic:
How to Obtain the Latest Service Pack or Update Rollup for Exchange 2007(http://go.microsoft.com/fwlink/?LinkId=152570)

Symptoms
When you use the System.Web.Mail namespace to send an e-mail message from a Microsoft Exchange Server 2003 mailbox, you may receive the following exception error message:

Server Error in ‘/FromAttribute_336233.5555_1_001′ Application.
Exception 0xC0000005 was generated at address 0×6eb51329
Description: An unhandled exception occurred during the execution of the current Web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.Runtime.InteropServices.COMException: Exception 0xC0000005 was generated at address 0×6eb51329
Resolution
This problem may occur if the From field of the e-mail message contains more than 255 characters.