Recently, we came across the following issue when attempting to sign a VSTO Add-In with a code-signing certificate: An error occurred while signing: Unknown error “-2147012865” Any search of the error message brought up related answers but not ones specific to this particular error number. Although I can’t be sure of the error number, I…More
Category Archives: Office Development
How to know if a SharePoint tenant blocks apps not using modern authentication
Out of the box, SharePoint Online allows someone to authenticate through either the older claims-based authentication or the newer modern authentication. This post shows you how to know if claims is blocked for third-party applications.More
Locally debugging Office Add-ins errors with “We can’t open this add-in from localhost”
When developing an office add-in, some times my local development environment causes issue when attempting to work with Windows Desktop versions of Office (Outlook, Word, Excel, PowerPoint). What could be working one day will tomorrow have Office saying “We can’t open this add-in from localhost”.More
Exam Study Guide: MS-600: Building Applications and Solutions with Microsoft 365 Core Services
This week at Microsoft Ignite a bunch of new exams were announced, these were specifically geared around the role-based certifications that Microsoft is moving to.More
How to easily get an authentication token to your Office 365 Tenant
I have been developing a backend service that requires a Microsoft Graph token passed up from the frontend. During this development, I have been using Postman to do the call, and have used a simple SPA with authentication to give me a token to my development tenant.
This has been a pretty annoying way to do things when the token expires every half an hour or so, meaning I need to generate another.More
Updating a SharePoint List Item’s Content Type in the Microsoft Graph
The Microsoft Graph Documentation on how to update a SharePoint list item describes only how to update the fields. But what if you want to change the content type?More
Using the Microsoft Graph to determine if an Office365 Group has an associated Microsoft Team
It is very easy to accidentally create an Office365 Group, for example by creating a new plan or creating new Team in Microsoft Teams; either of these (and I’m sure there are more ways) will provision an entire Office365 Group including mailbox, calendar, SharePoint team site and OneNote notebook. It doesn’t create a team unless…More
Using the Angular CLI and the Yeoman Generator to create an Office Add-in
UPDATE: Since this was written the office generator has been updated and does not work in the same way as below, specifically that it no longer asks to create a subfolder (for you to refuse) and does it anyway. If a folder already exists then it will fail and the instructions below are now useless.…More
Using the Microsoft Graph API to upload files to a Library with more than 5000 items gives you a HTTP 404
UPDATE: Around the time of this blog post I added a question on StackOverflow about this issue, and a few months later it was responded to and resolved. This issue in the format mentioned below should no longer exist. I have decided to keep the post alive however as it may support any other issues…More
Dynamic content for email signatures in Outlook (an exercise in being lazy)
Every second week at OnePlace Solutions, our very enthusiastic marketing manager tells everyone in the company to update their email signature. Typically it is just changing the image below our name to show what event we are at next, or highlighting a particular product or feature recently worked on. The image is also hyperlinked to…More
Brett McKenzie 