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SharePoint serendipity is the effect by which one accidentally discovers something fortunate, especially while looking for something else entirely. In this case, it is the occassional musings, observations, and Ouija board readings about the phabulously
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Developing Low Trust Provider Hosted Apps with SAML Authentication in SharePoint 2013
Low trust provider hosted apps in a SAML secured SharePoint web application is a scenario that did not work when SharePoint 2013 was released. Things have changed fortunately, so here's a quick run down on what you need to do in order to build these apps on premises. The first thing you need to do...
3 Oct 2014
An Updated ClaimsTokenHelper for SharePoint 2013 High Trust Apps and SAML
When Visual Studio 2013 came out, it introduced a new class and simplified methods for obtaining a ClientContext to use with the Client Side Object Model (CSOM) to access SharePoint 2013 sites. A new SharePointContext class was added to simplify the programming model, but internally it still called the...
30 Sep 2014
Configuring SharePoint Hosted Apps with SAML Authentication in SharePoint 2013
NOTE: This is a sampling of some content we're preparing for working with SharePoint Apps and SAML authentication. More content will be coming, and once everything is packaged up and a distribution channel determined I'll post a general announcement on the Share-n-Dipity blog. The concept...
30 Sep 2014
Developing and Deploying Multiple SharePoint 2013 Apps to a Single Azure Web Site
Today’s topic is one that came about after I heard some folks kind of unhappy about using Azure web sites as a platform for SharePoint 2013 provider-hosted apps. The unhappiness as was really just about the fact that you only get 10 Azure web sites for free and some folks were thinking that this...
13 Aug 2014
CloudTopia: Connecting o365, Apps, Azure and Cortana – Part 6
In Part 5 of this series we looked at all of the different ways in which CloudTopia is integrated with Office 365 through our custom Web API REST controller. We’re going to wrap up this series with a little sizzle, and look at the custom Windows Phone app we wrote to work with CloudTopia using...
11 Aug 2014
CloudTopia: Connecting o365, Apps, Azure and Cortana – Part 5
In Part 4 of this series we looked at the integration with various Azure services in the CloudTopia app. In this part we are going to explore all of the integration that was done with Office 365 and how we did it. Here's some quick links to the whole series: Intro Open Graph ...
11 Aug 2014
CloudTopia: Connecting o365, Apps, Azure and Cortana – Part 4
In Part 3 of this series we looked at the plumbing required to add support for Web API 2.x to your SharePoint Apps, as well as some of the integration needed to have it work with SharePoint and CSOM. In Part 4 we’re going to look at the integration with various Azure services in the CloudTopia...
11 Aug 2014
CloudTopia: Connecting o365, Apps, Azure and Cortana – Part 3
In Part 2 of this series we looked at some of the details of working with Yammer Open Graph items in the CloudTopia app. In Part 3 we’re going to talk about adding and using Web API 2.1 functionality to a standard out of the box SharePoint App, and then look at what we do with that in CloudTopia...
11 Aug 2014
CloudTopia: Connecting o365, Apps, Azure and Cortana – Part 2
In Part 1 of this series, I introduced you to the CloudTopia app. In Part 2 we’re going to look at some of the work we did with Open Graph items in CloudTopia. Here's some quick links to the whole series: Intro Open Graph Web API Azure Integration Office 365 Integration...
11 Aug 2014
CloudTopia: Connecting o365, Apps, Azure and Cortana – Part 1
This is going to be a multi-part series to dissect and tear apart an application I tweeted about using the #yammerofjuly hashtag. This is an application I developed a couple of months ago as a means of illustrating some of the different complexities and options when building applications that span several...
11 Aug 2014
Uploading Large Files to SharePoint 2013 from .NET Using CSOM and REST
This is a topic that seems to come up with some frequency and when I needed to do it recently I could not find a good working sample of doing this from server-side code. The scenario here is imagine you want to upload some very large files to SharePoint via CSOM. You have some code running "somewhere"...
2 Aug 2014
Access Denied Error with App Only Access Token When Reading Profile Info
This is yet another rather strange error that I ran across and couldn't find any info out on the interwebs about it so I though I would document it here. Suppose you have a SharePoint App that needs to access some User Profile information. You will probably use the PeopleManager class and ask for...
25 Jul 2014
SAML Support for SharePoint-Hosted Apps with ADFS 3.0
This is another case where I'm just passing information along here, based on the great work of others. As you probably know, we did not have a good story for SharePoint-hosted apps in web application that uses SAML authentication with ADFS 2.0. However, I have had reports from a couple of different...
19 May 2014
Changes To Know About When Your SharePoint STS Token Signing Certificate Expires - the Impact to Your High Trust Applications
This is a another follow up to my earlier post on changing the token signing certificate for the SharePoint STS as described here: http://blogs.technet.com/b/speschka/archive/2014/05/06/updating-trust-between-onprem-farms-and-acs-for-apps-when-your-sharepoint-sts-token-signing-certificate-expires.aspx...
12 May 2014
Missing Context Token in Low Trust App with SharePoint 2013 - Part 2
As I noted in my first post on this topic - http://blogs.technet.com/b/speschka/archive/2013/05/28/missing-context-token-in-low-trust-app-with-sharepoint-2013.aspx - you may find yourself in a low trust app without a context token, which basically leaves you up the creek without a paddle. I ran across...
8 May 2014
Create a List in the Host Web When Your SharePoint App is Installed...and Remove it from the Recent Stuff List
This is one of those questions that I've seen asked a lot but for some reason I've never really seen anyone post an answer to it. I did a quick Bing search before writing this post but didn't really see anything up there so I'm going to go out on a bit of a limb and guess that maybe there's...
7 May 2014
Updating Trust Between OnPrem Farms and ACS for Apps When Your SharePoint STS Token Signing Certificate Expires
For those of you who are "in the app way" with SharePoint 2013 (no, not a lot different from being "in the pregnant way", as they say), you'll reach that point sooner or later where the token signing certificate for your SharePoint STS expires if you are using low trust apps on...
6 May 2014
How To Control App Token Lifetimes in SharePoint 2013
Today's post is the first selection from the little twitter contest I announced on the Share-n-Dipity blog a few days ago: http://blogs.technet.com/b/speschka/archive/2013/09/04/use-social-tools-to-tell-me-what-you-want-to-see-here-next.aspx . Shariq wanted to know more about the lifetime for high trust...
12 Sep 2013
Security in SharePoint Apps - Part 4
PREVIOUS: Security in SharePoint Apps – Part 3 In Part 3 I talked about how SharePoint sends over a context token with the request for an App when using low trust (this does NOT come over to a high trust app). It’s worth looking at what a context token is, and how we compare that to a...
30 Jul 2013
Planning the Infrastructure Required for the new App Model in SharePoint 2013
SharePoint 2013 brings with it a brand new application model, which we euphemistically refer to as the “app model” or “cloud app model”. While it brings a whole new set of opportunities from a development perspective, it also carries with it infrastructure requirements that you...
3 Sep 2012
Converting a VS.NET Web for a Provider Hosted SharePoint App to a Full Blown Web or Console Application
This post is yet another in my series of "how long of a post title I can come up with and still not convey the actual essence of the post" contest. I'm sure you've all been following along at home and are thrilled to see another entry, but it was either this or create a title with like 63 words in it...
13 Jun 2013
Another 401 Unauthorized Tip for Working with SharePoint Apps
I've tried to update the related postings to this, but sometimes you need a call out to make sure it catches your attention so...here's another troubleshooting tip for when you get a 401 unauthorized error when your app tries to access SharePoint content. Suppose you have gotten everything working and...
3 Jul 2013
Security in SharePoint Apps - Part 3
PREVIOUS: Security in SharePoint Apps - Part 2 In the first two parts of this series we looked at what an App Principal is and what the security context is that we use when a request comes into SharePoint. Now that we have those basic components of the framework defined, let’s talk a little...
30 Jul 2013
Getting the Current User Identity in a Low Trust App in SharePoint 2013
Today's post comes primarily because it's a common question, but not because it's a particularly brilliant answer; maybe just a bit unexpected. If you followed the some of the differences between low trust and high trust apps in SharePoint, you will know that in a low trust app, SharePoint knows who...
20 Nov 2013
Security in SharePoint Apps - Part 7
PREVIOUS: Security in SharePoint Apps – Part 6 In this part of the series, I’m going to shift gears a bit and talk about high trust apps and the plumbing that goes along with them. As I’ve explained somewhat earlier in this series, one of the big differences between low trust and...
2 Aug 2013
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