See all products »
Curah! curation service
Microsoft Tech Companion App
Microsoft Technical Communities
Microsoft Virtual Academy
Server and Tools Blogs
TechNet Flash Newsletter
Cloud and Datacenter
Windows Server 2012 R2
System Center 2012 R2
Microsoft SQL Server 2012 SP1
Windows 8.1 Enterprise
See all trials »
Microsoft Download Center
TechNet Evaluation Center
Microsoft Virtual Academy
Free Windows Server 2012 courses
Free Windows 8 courses
SQL Server training
MCSA: Windows 8
Windows Server Certification (MCSE)
Private Cloud Certification (MCSE)
SQL Server Certification (MCSE)
Second shot for certification
Born To Learn blog
Find technical communities in your area
For small and midsize businesses
For IT professionals
For technical support
For home users
Microsoft Premier Online
Microsoft Fix It Center
Security Bulletins & Advisories
International support solutions
Log a support ticket
Not an IT pro?
Microsoft Customer Support
Microsoft Community Forums
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
Office Web Apps
OneDrive for Business
Visual Studio 2010
Visual Studio 2012
Windows Phone 7
Windows Phone 8
Browse by Tags
Fixing the Provided App differs from Another App with the Same Version and Product ID Error in Office 365
I started hitting this little gem of an error recently and was ready to pull out the little remaining hair I had, when a very kind Program Manager named Jim S. told me how to fix it. The scenario is something like this: you install an App for SharePoint in Office 365. You make some changes to the app...
19 Feb 2015
Using ADAL Access Tokens with o365 REST APIs and CSOM
Many fine folks were generous enough to point out to me this week that you can now (actually since June’ish I’m told) use an access token you get from ADAL in conjunction with the o365 APIs to use ALSO with the SharePoint REST API as well CSOM. Shocking!! This may be what they call “asleep...
18 Dec 2014
Desktop SharePoint Apps for SAML Secured SharePoint Sites
Continuing on with the theme of SAML secured SharePoint sites and SharePoint Apps, this next posting looks at another common application model, which is using what I call a desktop app to connect to SharePoint. By “desktop”, I mean an app that doesn’t have an HttpContext, like a console...
17 Nov 2014
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
Another Apps for SharePoint Tip with the Error "The issuer of the token is not a trusted issuer"
I was working on a build of SharePoint that is post beta 2 today, and found that one of my custom high trust apps I had built would no longer work. In looking at the ULS logs I was getting the dreaded "The issuer of the token is not a trusted issuer" error message. I think this is the equivalent...
28 Sep 2012
An Important Tip About Client ID Values for S2S Apps in SharePoint 2013
Here's something that might cost you a TON of time if you aren't careful, so please take a few minutes to read this. You should be seeing some documentation pretty shortly that describes how to create what we call an S2S application, which means Server to Server trust application. You will also...
29 Jul 2012
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...
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
© 2015 Microsoft Corporation.
Privacy & Cookies