August 2009 - Damir Dobric Posts

Authentication Problems by using of NTLM

When configuring NTLM in an enterprise you may get error message like this one: ” Authentication error HTTP 401” (sometimes 401.1). Depending on the client you use this error can be shown for example in the browser if you try to access some page on some...

Published Fri, Aug 28 2009 2:30 PM by Damir Dobric

SOAP Faults and New Network Stack in Silverlight 3

Receiving SOAP faults is not supported in the default configuration. This seems to be some Web browser limitation, but a nightmare for WCF developer. When one service sends a fault message, an exception is thrown on the client. Unfortunately it does not...

Published Sat, Aug 22 2009 12:17 PM by Damir Dobric

Configuring and Troubleshooting NTLM and Kerberos on Windows 7 (Windows Server 2008) and IIS7

Sometimes it might be required to enable NTLM in IIS. One good reason for this could be some service suite (for example bunch of WCF service). As long you enable your services internally in your enterprise you should enable KERBEROS authentication only...

Published Sun, Aug 16 2009 8:06 PM by Damir Dobric

Enabling of NTLM on Windows 7 and Windows Server 2008 R2

New operative systems are by default not very friendly to NTLM authentication. The introduce a set of group policies which control who can use NTLM in enterprise. Following picture shows the final configuration which I set up at my development machine...

Published Sun, Aug 16 2009 8:04 PM by Damir Dobric

Filed under: WCF

Building Custom Virtual Earth

For all of you who need or ever wanted to build you own virtual earth map, here is an example which shows how to do this. Note that Virtual Map Images are hosted at http://daenet.eu/share/maps . Please note that these are just for demo purposes and should...

Published Fri, Aug 07 2009 2:35 PM by Damir Dobric

DropShadowEffect causes performance degradation in Silverlight

When working with Silverlight you might notice sometimes performance degradation which you cannot explain. To ilustrate this take a look on following XAML example. The picture above shows one page in XAML which contains two commented blocks. When these...

Published Fri, Aug 07 2009 1:50 PM by Damir Dobric

Silverlight3 Breaking Change

If you have developed SIlverlight < 3.0 apps, you might (sometimes) notice that some of them will not work on Silverlight 3.0 One of issues which causes this problem is the fact the Microsoft has decided to remove Silverlight.Dll from Silverlight SDK...

Published Thu, Aug 06 2009 12:53 AM by Damir Dobric

New BizTalk Server SKU-s

Few days ago at WPC Microsoft has announced new BizTalk Server editions (SKU-s) BizTalk Server 2009 Enterprise Runtime Edition : Every application needs to integrate with other applications in customer environments and solution companies do not want to...

Published Wed, Aug 05 2009 10:21 AM by Damir Dobric

Cannot enable networking for Device Emulator

When developing mobile applications for Windows 7, you may get following error, when trying to enable networking for device emulator: The required Virtual Machine Network Driver could not be found. Make sure that Virtual PC 2007 is installed. You can...

Published Sun, Aug 02 2009 7:23 PM by Damir Dobric

Intellectual Error messages

When automating PowerPoint you might get following error: “ COMException: Presentation (unknown member) : An error occurred while PowerPoint was saving the file.” I have always been asking myself, how to find an optimal path in my brain able to lookup...

Published Sat, Aug 01 2009 12:12 AM by Damir Dobric