If DRACOON for Outlook is rolled out and installed on the company network via an MSI package, the WebView2 runtime from Microsoft in the Evergreen variant must also be distributed and installed once.

The WebView2 runtime has also been distributed and installed on PCs by Microsoft for some time, e.g. since April 2021 as part of Office 365 monthly updates; it is also already included in Windows 11. In these cases, it does not need to be installed if DRACOON for Outlook is distributed as an MSI package.

As soon as the WebView2 runtime is installed in the so-called Evergreen variant, it is always automatically kept up to date by Microsoft via Windows Update and provided with security updates.

The WebView2 runtime can be installed as an official Windows component without hesitation and does not affect any existing browsers on a PC.

If the WebView2 runtime is not installed on a PC, DRACOON for Outlook displays a corresponding note with a link to a support page when trying to log in, and logging in to DRACOON with DRACOON for Outlook will not be possible.

If DRACOON for Outlook is installed via the regular setup (.exe file instead of .msi file) (also as an update over an existing version), the setup automatically checks during the installation/update if the WebView2 runtime is already present on the PC and downloads and installs it automatically from Microsoft if necessary—thus, in this case, the WebView2 runtime does not have to be installed manually.

More info about WebView2 Runtime distribution at Microsoft