Microsoft KB Archive/940011

= Error message when you try to use the spelling checker in Outlook Web Access: &quot;Your Exchange server is busy and can't check spelling at this time. Try again later&quot; =

Article ID: 940011

Article Last Modified on 10/25/2007

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APPLIES TO


 * Microsoft Exchange Server 2003 Standard Edition
 * Microsoft Exchange Server 2003 Enterprise Edition

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SYMPTOMS
You go through a Microsoft Exchange Server 2007 server that is running the Client Access Server (CAS) role to accesses a mailbox that is hosted on a Microsoft Exchange Server 2003 server. If you try to use the spelling checker in Microsoft Office Outlook Web Access, you receive the following error message:

Your Exchange server is busy and can't check spelling at this time. Try again later.



CAUSE
This problem occurs if you belong to many secure groups that results in a large token. The spelling checker in Outlook Web Access for Exchange 2003 has an 8-kilobyte (KB) limit for all HTTP headers. When you go through an Exchange 2007 server that is running the CAS role to access the mailbox, the POST command fails if the Kerberos authorization header is larger than 8 KB.



Hotfix information
A supported hotfix is now available from Microsoft. However, it is intended to correct only the problem that is described in this article. Apply it only to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Exchange 2003 service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Customer Support Services to obtain the hotfix. For a complete list of Microsoft Customer Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

Prerequisites
Because of file dependencies, this hotfix requires Microsoft Exchange Server 2003 Service Pack 2 to be installed on the server. For more information, click the following article number to view the article in the Microsoft Knowledge Base:

836993 How to obtain the latest service packs for Exchange Server 2003

Restart requirement
You do not have to restart the computer after you apply this hotfix. However, the IIS Admin Service and all dependent services are automatically restarted when you apply this hotfix.

Hotfix replacement information
This hotfix does not replace a previously released hotfix.

File information
The 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.



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.

Additional query words: spell checking owa spellcheck function functions

Keywords: kbexchowa kbexpertiseinter kbhotfixserver kbqfe KB940011

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