Dmitry Kostochko

Support for Office 2019 is added to Add-in Express for Office and .net

Our flagship product was used to be the first to support new features and new Office versions. This time, we are a bit late and apologize for the delay.

Nevertheless, version 9.2 of Add-in Express for Office and .net is published, and we now announce full support for all versions of Office 2000 through 2019 32-bit and 64-bit.

What's new in version 9.2

Apart from a few bug fixes, there is just one item in the What’s new list:

  • Support for Microsoft Office 2019 applications

In terms of functionality, Office 2019 does not have any noticeable changes.

The only change that is probably worth your attention is that our list of supported applications is now one item shorter. It is because Microsoft has removed OneNote from the Office 2019 Suite. More precisely, they replaced the desktop version with a UWP one and, as you know, COM add-ins do not work in UWP applications. Of course, you can still download and install OneNote 2016, which is desktop and supports COM.

More information can be found in OneNote 2016 is missing after installing Office 2019 or Office 365.

How do I get the new version?

Everyone who has an active subscription of version 9.x of Add-in Express for Office and .net can download v.9.2 fromĀ this page and activate it with the current license key.

As usual, you can upgradeĀ from any previous version for 50% of the full price.

How do I add support for Office 2019 to my existing projects?

After installing version 9.2, please carry out these steps:

  1. Check if the latest versions of the Add-in Express assemblies are used in the References. For this, look at the Version property, and if it is other than 9.2 make sure the Copy Local and Specific Version properties are set to False:

    Check the properties of the Add-in Express assemblies.

  2. Update the Add-in Express loaders. To have it done, simply click Add-in Express -> Register in Visual Studio. During the registration process, you will be prompted to replace your current loaders with the latest ones.
  3. Rebuild and re-test your project.

Thank you for your attention and happy coding!


  • Gert-Jan van der Kamp says:

    Hi guys,

    Do you have any data of which versions of office are used today and what the trends are? Sepcifically, I’m writing an add-in for Excel and have some issues/ overhead keeping all that taskpanes etc synchronised with the actiev workbook. But 2010 is 9 year sold already, I’m trying to work out how much not supporting 2010 would affect my adoption?

  • Andrei Smolin (Add-in Express Team) says:

    Hello Gert-Jan,

    No, we don’t have such statistics.

  • mahi says:

    how to open word application (not text file) in mdi parent in webbrowser/panel/or other box wherever possible and some edit in the file save through save button and then close btn close plzzzzzz full detail plz or upload video on youtube or send me all code

  • Dmitry Kostochko (Add-in Express Team) says:

    Hello Mahi,

    Sorry, this task is beyond our area of specialization and therefore I cannot suggest anything to help you.

  • Beau says:


    We have used your product for many years, and we would like to continue using it. Will you be supporting Office 365? We want to use your excellent Outlook product with Office 365.


  • Andrei Smolin (Add-in Express Team) says:

    Hello Beau,

    The term “Office 365” covers desktop, Mac, web and mobile Office versions. Add-in Express only supports the desktop version. This is because COM is only supported on Windows Desktop.

  • David Potashinsky says:


    I’ve installed ADX for VS 2019, but I can’t find the new project template to create new project. Whare is that?

  • Andrei Smolin (Add-in Express Team) says:

    Hello David,

    If Add-in Express is registered with Visual Studio you can find it listed in the About dialog; see Help | About in the main menu. If this isn’t the case, I suggest that you reinstall the product making sure VS 2019 is selected in the corresponding installer window.

    If you have other issues, please write us to the support email address. Also, you can use the contact form at

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