How to consume a self-hosted WCF service in a cross-domain environment by Silverlight client

Background: When a Silverlight client tries to consume WCF service, it’s allowed only site-of-origin communication by default. For example, a Silverlight control hosted at http://domainA/default.aspx can only consume only services on that same domain by default, that is: http://domainA/WCFService.svc,  but not http://domainB/WCFservice.svc.   To make the WCF service hosted at : http://domainB/WCFservice.svc be accessible for…

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WCF Performance troubleshooting

    I was recently engaged in a consulting project sponsored by one Premier customer. The project is kinda SOA and will leverage Microsoft SOA technology Windows Communication Foundation (WCF). The project as a whole may be composed of several different consumers for instance ASP.NET web application, WinForm application etc. and one middle tier WCF…

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Custom 404 page in IIS 7 – 500.19

You may receive 500.19 – Internal Server Error   Absolute physical path “driver:\path” is not allowed in system.webServer/httpErrors section in web.config file. Use relative path instead.     when configure Custom 404 page with static file as below.   Root Cause ========   The error is generated due to an absolute path is detected in…

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IIS & SMTP Service shut down when successfully apply Security policy

Here is the story about the issue. IISSVC and SMTPSVC services are changed from auto start to disabled and stopped in all domain machines.   Following event message was logged in Application log: Event Type:  Information Event Source:     SceCli Event Category:  None Event ID:      1704 Date:           3/17/2010 Time:           3:54:09 AM User:           N/A Computer:    ComputerName Description:…

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Troubleshooting and Administrating MSDTC (Microsoft Distributed Transaction)

    Administration   1. How does client communicate with MSDTC Cluster?   2. Understanding MSDTC communication from network layer traffic   Cluster   1. How to configure individual MSDTC resource with SQL cluster application in SQL Server 2008 Failover Cluster   2.  How to configure shared MSDTC resource for Windows 2008 Failover Cluster  …

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How to troubleshoot MSDTC transaction failure issue with linked Oracle Server on Win2003

In enterprise environments, customers sometimes need to set MSDTC transaction to work with remote Oracle target server. Because the cross-product setup is complicated, sometimes we may face Transaction Failure issue when updating data to a linked Oracle database, for example:   Server: Msg 7391, Level 16, State 1, Line 1 The operation could not be…

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How to Manage IIS7 Website Remotely

                                            Step One:  Make sure Management Service has been installed on the IIS7 server ==================================================================     To install the Management Service:   Click Start, type Server Manager in the Search box, and press ENTER to open Server Manager. In the tree, under Roles, select Web Server (IIS). Click Add role services, and then…

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How to troubleshoot DCOM 10009 error logged in system event?

Symptom:   Sometimes, we may see below DCOM 10009 errors in our system event, or we may receive the exception code 0x800706ba in our DCOM client application: Event Type:        ErrorEvent Source:    DCOM|Event Category:                NoneEvent ID:              10009Date:                     2010-2-22Time:                     10:02:07User:                     N/AComputer:          <Computer Name>Description: DCOM was unable to communicate with the computer <Target Computer Name> using any of…

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How to troubleshoot the “Red Arrow” issue in Component Services ( I )

In distributed environment, when we meet problems to call DCOM components or COM+ application, the first thing is to open the Components Manager to check or reconfigure COM+/DCOM settings.  However,  it is possible that when we open the Component Services, a “Red Arrow” displays on the “My Computer” node:    If we try to expand…

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Troubleshooting IIS: IIS Administration Issues

    1. IIS Admin Service cannot start with error 0x80004015   2. IIS MMC hangs after upgrading Windows 2000 to Windows 2003   3. Windows Firewall setting for IIS Manager remote connection   4. Failed to Open IIS MMC after modified machine.config   5. How to index IIS 7.0 Web sites in Windows Server…

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