Microsoft KB Archive/939999

= A URL that includes a &quot;notes:&quot; prefix does not work in Outlook Web Access for Exchange 2003 =

Article ID: 939999

Article Last Modified on 11/26/2007

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APPLIES TO


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

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Important This article contains information about how to modify the registry. Make sure that you back up the registry before you modify it. Make sure that you know how to restore the registry if a problem occurs. For more information about how to back up, restore, and modify the registry, click the following article number to view the article in the Microsoft Knowledge Base:

256986 Description of the Microsoft Windows registry



SYMPTOMS
You use Microsoft Office Outlook Web Access for Microsoft Exchange Server 2003 to access an e-mail message that includes a Lotus Notes URL. The Lotus Notes URL resembles the following:



Here is a link: notes://servername



In this situation, the URL in the  tag is removed. Therefore, the URL does not work in Outlook Web Access.



CAUSE
The Safe HTML filtering feature in Outlook Web Access will remove any unsafe protocol links. This behavior occurs because a malicious HTML e-mail message can contain unsafe protocol URL links. Outlook Web Access for Exchange 2003 recognizes only the following URL prefixes as safe:
 * http:
 * https:
 * ftp:
 * file:
 * mailto:
 * news:
 * gopher:
 * about:
 * wais:
 * cid:
 * mhtml:
 * ipp:
 * msdaipp:



RESOLUTION
Warning Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by using another method. These problems might require that you reinstall the operating system. Microsoft cannot guarantee that these problems can be solved. Modify the registry at your own risk.

After you apply this hotfix, you must create the AdditionalSafeURLScheme registry entry. To do this, follow these steps:
 * 1) Click Start, click Run, type regedit, and then click OK
 * 2) Click the following registry subkey:  
 * 3) On the Edit menu, point to New, and then click String Value.
 * 4) In the details pane, type AdditionalSafeURLScheme, and then press ENTER.
 * 5) Right-click the AdditionalSafeURLScheme registry entry, and then click Modify.
 * 6) In the Value data box, type NOTES, and then click OK.

Note You can add other URL prefixes as necessary by using a comma-separated list.
 * 1) Exit Registry Editor.

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
Microsoft Exchange Server 2003 Service Pack 2 (SP2) must be installed on the server before you apply this hotfix. 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 following services are automatically restarted when you apply this hotfix:
 * Microsoft Exchange Information Store service
 * Microsoft Search service
 * IIS Admin Service and all dependent services

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.



MORE INFORMATION
For more information, click the following article number to view the article in the Microsoft Knowledge Base:

920781 Lotus Notes DocLinks in e-mail messages are replaced with bitmap icons in Exchange 2003

Additional query words: spell checking OWA

Keywords: kbexchowa kbexpertiseinter kbhotfixserver kbqfe KB939999

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