> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://aide.merci-app.com/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# Technical specifications required to use the MerciApp add-in for Word

Several prerequisites are required to install the MerciApp add-in for Word.

# Operating systems

MerciApp for Word is available on Windows 10, Windows 11, macOS (all versions), and Office Online (accessible via your web browser).

The add-in uses the latest technologies to ensure optimal performance, which may sometimes result in incompatibility with older versions. We recommend reading the specifications for each operating system below.

## Windows

The level of compatibility varies depending on your edition of Office.

### Microsoft 365

Your version of Windows must be **1903 or higher**, released in May 2019. You can check which version you are using by following [these steps](https://support.microsoft.com/fr-fr/windows/quelle-version-du-syst%C3%A8me-d-exploitation-windows-mon-ordinateur-ex%C3%A9cute-t-il-628bec99-476a-2c13-5296-9dd081cdd808#WindowsVersion=Windows_10), then reading the number next to "Version." Versions 20H2, 21H1, and 21H2 are also compatible.

Your version of the Office suite must be **1905 or later**, released in June 2019. You can check which version you are using by following [these steps](https://support.microsoft.com/fr-fr/office/obtenir-le-num%C3%A9ro-de-version-pour-votre-programme-office-et-les-informations-%C3%A0-propos-de-votre-ordinateur-39b61842-3b2f-4efd-824e-6eeaa006c1b0#:~:text=Click%20on%20the%20File%20tab,version%20of%20your%20Office%20program.).

Office 2021 as a one-time purchase

All versions of the Office 2021 suite are compatible, regardless of the release date of the version you are using. However, you will need to install a small, lightweight add-on developed by Microsoft to modernize certain parts of your operating system.

Please refer to the Edge Webview2 section at the bottom of the article.

### Office 2013 - 2019

Unfortunately, the MerciApp add-in is not compatible with these versions. As Microsoft has decided to discontinue support for these editions, we cannot commit to developing and maintaining software for them.

## macOS

All versions are compatible with MerciApp; however, certain restrictions may be put in place to compensate for possible internal malfunctions in the macOS versions of the Office suite software.

## Office Online

All browsers are compatible except Internet Explorer and Edge 1. We recommend that you migrate to a more recent version of these two software programs, using the latest version of Microsoft Edge, which can be downloaded here (https://www.microsoft.com/fr-fr/edge).

# Edge Webview2

Microsoft provides a very lightweight program to modernize your various tools; MerciApp relies on these tools to access the latest technologies.

## Installation guide

* Go to this link: https://go.microsoft.com/fwlink/p/?LinkId=2124703
* Install the program provided
* Restart Word