AWG Blogs

Thursday, February 28, 2013

DB Access Account error when Adding WFE

If you get this error when attempting to add a WFE to a farm:

"SharePoint Products and Technologies Configuration Wizard"
"The username entered must be the same as the database access account for the server farm you wish to join. Either choose NT AUTHORITY\NETWORK SERVICE as the username or choose a different database name"

try changing the user account used for the Timer service and Central Admin app pool. Supposedly this is the account specified at installation AKA server farm account or AKA Database Access Account (as in the error message).

Confusing, I know.

This does the trick:

stsadm -o updatefarmcredentials -userlogin -password

iisreset /noforce

 http://technet.microsoft.com/en-us/library/cc288991(v=office.12).aspx

Note: you may also need to enable the SQL Server Browser service on the CA server.

Friday, February 15, 2013

Bind ViewModel Declaratively with Caliburn.Micro in Non-Caliburn.Micro App

I have an existing Silverlight App with Frame based navigation and the app is fairly stable. I wanted to look into logging interception of ViewModels and that is when I started testing Caliburn.Micro (per an answer to my question here). My aim is to gradually migrate pages over to the Caliburn.Micro framework, but not have CM take over the App at first (i.e. set the RootVisual). The closes discussion on the web I could find regarding this scenario was http://caliburnmicro.codeplex.com/discussions/260738. To do a proof-of-concept I simply combined the files from the Caliburn.Micro.ViewFirst sample project with a SL Nav template project:

- Create a new "Silverlight Navigation Application" project
-Add existing files from ViewFirst sample: IShell.cs, MefBootstrapper.cs, and ShellViewModel.cs (change namespaces if desired)
- Add necessary references to MEF and Caliburn.Micro
- In MefBootstrapper, remove the OnStartup override method, since we are not setting the rootvisual, but instead letting the App.xaml do that. Note I thought it was necessary to also override the constructor and set "base(false)" but it seems to work either way, so I left it out.
- Copy the StackPanel element and its content from ShellView.xaml into the ContentStackPanel of About.xaml
- For the declarative binding of VM, also add the following also to About.xaml:     cal:Bind.Model="Shell"  xmlns:cal="http://www.caliburnproject.org"
- At the top of the App constructor of App.xaml.cs add:             new MefBootstrapper();
- Press F5, click "About" and notice that you have a working Caliburn.Micro ViewModel View with Actions all wired up automatically!

Monday, February 11, 2013

IsolatedStorageException - "Initialization Failed"

I got this IsolatedStorageException - message: "Initialization Failed" - when using Enterprise Library. The line giving the error is in StorageAccessor.Silverlight.cs
            this.store = IsolatedStorageFile.GetUserStoreForApplication();
I've gotten this error before in other circumstances, and usually occur right after I delete the Isolated Storage for a particular URL and reopen the app.

Tried rebooting, recompiling, reinstalling Silverlight runtime. Finally what worked was deleting this folder: C:\Users\User.Name\AppData\LocalLow\Microsoft\Silverlight

Apparently there is some corrupted state left over in there. I also noted that around this time I was unable to delete other app stores.