Category Archives: SharePoint

Setup your development environment for High trust Saml Claims based SharePoint provider hosted applications using OWIN and an easy to use STS – part 3

Since SharePoint 2013, web applications are created with claims based authentication by default. This works with together with High trust provider hosted apps, based on windows authentication as well. Whenever ADFS with its SAML claims pops in, it gets complicated: SharePoint needs to be configured, High trust provider apps need to configured and the app needs to communicate with SharePoint – using saml claims. Mix in a development environment, where, very likely, no ADFS is available and it gets complicated. Until now ;).

This blogpost describes how to setup an identity provider STS for development environments, how to configure SharePoint to use this STS and how to develop a web application that uses SAML claims and can communicate with SharePoint. All using OWIN, as it easens up development. More information on the STS and the OWIN configuration can be found in my previous blogpost in this series:

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Claims based authentication – The signature verification failed

I was working on a small addition to the Thinktecture EmbeddedSTS, to ease up local development for our development teams, who are building a lot of MVC applications and SharePoint provider hosted apps. We don’t want to bother them with setting up a separate AD and ADFS, so we decided to use a simple, small STS: the Thinktecture Embedded STS. One of the actions was to add a FederationMetdata endpoint. This is a small improvement, as it’s now possible to setup claims based identities via OWIN, which is way easier to setup than via the typical web.config configuration. But there was one nifty error that was, in my case, very hard to find, but easy to fix. It turned out that the signature node may not contain any formatting, this means that spaces, line feeds and carriage returns should not be included in this Federationmetadata file

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How to integrate SignalR 2.0 in a SharePoint 2013 MVC App

With the introduction of Apps for SharePoint 2013 and the expansion of the SharePoint API, a whole new world opened for us, the SharePoint developers. This blogpost describes on how to integrate SignalR 2.0 into a SharePoint 2013 MVC app, with the possiblity to use SignalR from your hostweb! We will end up with a nifty SharePoint application that makes use of signalR and a remote  event receiver, which uses the signalR hub to push through new items to every registred client. An example solution is provided at the end of the document, but imagine what you could do with this. I personally always include signalR solutions when building apps, to monitor all events that I am interested in when debugging/fixing apps.

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SharePoint 2013 and Windows 8 apps – better together Part 1: Introduction, background and considerations

This is the first post as part of a blog series about the integration of using SharePoint 2013 as a datasource for windows 8 apps.


On 8 march 2013, my colleague Ad Reijngoudt (Windows 8 App developer, follow him on twitter: @Areijngoudt) and I spoke on the dutch Techdays on the subject: “SharePoint 2013 and windows 8 app – better together”. After this session, we got a lot of questions on several subjects, so I decided to write some blogposts on these subjects.

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Content by query webpart not performing due to misconfiguration

Today we were experiencing some major performance issues on some pages on a new website. The pages that were experiencing these performance issues, all made use of the content by query webpart (we didn’t have any performance issues before on these pages). The content by query webpart that we were using on the site, used a pagefield value, which was used to lookup some related pages from another list.

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Customizing ADFS login for SharePoint 2010: how we did it

In SharePoint 2010 the possibility of claims based authentication was introduced. The out of the box experience of this functionality is often OK, for example in cases of corporate intranets and extranets, but it doesn’t always fulfill the requirements of internet facing websites which require authentication.  This blogposts describes why we wanted to implement the active login scenario and learns us what kind of problems we encountered (and nailed ;))

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Indexing the new Geolocation field in SharePoint 2013 Technical preview is not possible

As I was playing around with the new geolocation column of SharePoint 2013, I wanted to try to migrate my geosearch solution for Fast Search for SharePoint 2010 to SharePoint 2013.  The addition of the geolocation column was opening up some interesting possibilities. Potentially, this solution would add some (near) out of the box geolocation solutions.

Unkown Datatype

After adding the geolocation column, adding some data to the last, I started to crawl the content. For some reason, the geolocation crawled property didn’t show up. And the reason why was logged to the Diagnostic log:

07/22/2012 21:14:27.12 mssdmn.exe (0x22BC) 0x1088 SharePoint Server Search Connectors:SharePoint dvs3 High Unknown datatype Geolocation [sts3util.cxx:6498] search\native\gather\protocols\sts3\sts3util.cxx

Apparently, the logic to index a geolocation column, hasn’t been implemented yet. Let’s hope it will be implemented when SharePoint 2013 will get released!

Expect some blogposts with a workaround for this issue soonish 😀

WSP Deployment scopes and the development lifecycle in large environments

At our company, we use sharepoint to host all of our websites. As SharePoint is quite scalable, this is of course no problem and the production farm can handle it easily. These websites need to be developed and be tested, before they can be deployed to the production farm. This process is nothing special and doesn’t diverge from most popular software development methodologies.

Development Lifecycle

As stated before: Our development process is not something special: we develop, test it, the customer accepts the product and finally we take the product into production.



Most of the developers that I know, develop their products on their own systems and they test it locally before the product is pushed to the development farm. At those companies, there is just one project (2 at most) which makes use of the development farm. The developers are free to deploy whatever and whenever they want, because they don’t have to take other projects into account.


But our situation is quite different.We host a large amount of portals and websites (that number is still growing) and part of those existing portals are  continously upgraded. As opposed to the situation above (with a single project working at a farm), we do have 10+ projects working simulteaniously at a single farm.


Deployment cycle

When just developing websites in ASP.Net, this isn’t much of a problem, as all sites can easily be copied to it’s location. As we all know, the deployment scenario in SharePoint, is different. Developers create WSP’s, and those WSPs are deployed to the farm. In our case, code is checked into TFS, TFS builds the WSP’s and some tooling, ROSS, gets triggered and deploys the generated WSP’s to the development farm. That same tool deploys the solutions to Test, Acceptance and Production environments. This tool has been configured in such a way, that a solution only can be deployed to the production farmwhen it has passed the Development, Test and Acceptance stages.



This automated deployment is very useful, but causes some problems for us. Due to the fact that we have multiple projects at the same central development farm, which makes it easy for developers to deploy solution pacakges, this causes a lot of retractions and deployments of WSP’s. Every single WSP retraction and addition, causes the IIS application pools to recycle. This can (sometimes) take quite some time, can be frustating, and is, sadly enough, inherent to SharePoint Development. These deployments can cause other projects to recycle too. This is mainly due to the scope of the WSP’s being deployed: when a WSP is deployed with a global scope, or is retracted, this affects ALL webapplications on the farm. Every single application gets a “free” application pool recycle. With two projects, this doesn’t have to cause much problems: even when no deployment planning is made, those projects don’t have to suffer much from each other.



But when more projects come in, things get worse, as seen in the diagram below. The availability of all web applications gets lower, which results into less testing time per app, and each deployment of a WSP blocks all other projects from deploying/testing. It’s not only annoying, it also cost’s a lot of serious money. The next diagram is just an indication with 2 deployments per project a day and assumes that a deployment on a farm with 1 webapplication takes as long as a deployment to a farm with 10+ webapplications. In my experience this is not the case at all: the more applications that co-exist on a farm, the more time a (global) solution deployment takes.



A solution for this problem is easy: split de big central Develoment farm into several small ones, as shown in the picture below:




This is a situation that, in my opinion,  has a lot advantages (aside from the availability options), and fits into the cloud strategy of microsft (hosted development images), but doesn’t solve all problems. Where the problems will disappear for developers, the problems will stay the same for the Test, Acceptance and Production environments. Not as much as at the development stage, but the deployments are still blocking other projects. The Test environment is heavily used by our testers and needs a lot of uptime, too. When looking from a business perspective: it’s notacceptable that a commercial site, which sells products, has downtime because an other site isbeing deployed to production.


The Solution

The solution to get rid of the blocking deployments, but keep the flexibility of deploying “any time”, needs a small hack. The deployment scope of the solution needs to be changed from “Global” to “WebApplication”. This is not a setting in the package property window, but is determined “deploy time”. In short: whenever there is an artefact or configuration option that needs to be deployed at the webapplication scope, the solution scope is “webapplication”. In all other situations, the WSP will be globally deployed. The easiest way to do this, is to manually add a dummy safecontrol to the manifest.xml.  Note: this doesn’t work in all cases. There are a few situations where a solution only can globally be deployed to a farm. Try to bundle these functionalities into a single package, to keep downtime as low as possible.



As seen in the picture above, in the most ideal situation, projects don’t block each other from testing. The only influence that projects have on each other, is the fact that wsp’s can’t be deployed simultaneously.



SharePoint solution deployments can be quite time consuming, and when not properly planned and configured, it can even block other projects when working simultaneously on a farm. The more projects that are using the farm, the more projects that can suffer from each other. A simple solution for this, is to force the solutions to be deployed at webapplication scope. This can be achieved by manually adding a safecontrol to the project.