Microsoft KB Archive/928888

= A client computer that is running Duet for Microsoft Office and SAP may stop responding during synchronization, and you receive the following error message: &quot;Error 401: User is not authorized&quot; =

Article ID: 928888

Article Last Modified on 9/11/2007

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APPLIES TO


 * Duet for Microsoft Office and SAP

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SYMPTOMS
When a client computer that is running Duet for Microsoft Office and SAP tries to synchronize with the host, the client computer may appear to stop responding. When this occurs, you receive the following error message in the Application event log:

Error 401: User is not authorized

Additionally, the client computer immediately retries the synchronization.



RESOLUTION
To resolve this problem, apply hotfix 928954. After you apply hotfix 928954, the client computer will not immediately retry the synchronization. Hotfix 928954 fixes the retry interval.

How to obtain the hotfix
This issue is fixed in the Duet for Microsoft Office and SAP hotfix package that is dated December 3, 2006. For more information, click the following article number to view the article in the Microsoft Knowledge Base:

928954 Description of the Duet for Microsoft Office and SAP hotfix package: December 3, 2006



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
By design, the Sync engine immediately retries an item when the Sync engine encounters a System.Net.Webexception to address any transient errors. In certain cases, as in the &quot;Error 401: User is not authorized&quot; error message, the error is not transient. Therefore, retrying the item does not help. Hotfix 928954 resolves this issue by increasing the retry interval to prevent the Sync engine from entering a short retry loop.

Keywords: kbclients kbstoprespond kberrmsg kbexpertiseinter kbhotfixserver kbqfe kbbug kbfix kbpubtypekc KB928888

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