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Fabasoft Folio Client and Microsoft Edge WebView2Permanent link for this heading

Last update: 13 August 2025 (db)

SummaryPermanent link for this heading

Fabasoft Folio provides Add-Ins for Microsoft Office applications to directly interact with Fabasoft Folio inside of Microsoft Office applications.

As Microsoft stops support for Internet Explorer 11, Fabasoft switches the default library for Office Add-Ins to the recommended Microsoft WebView2 library, starting with Fabasoft Folio 2022.

About Microsoft Edge WebView2Permanent link for this heading

Microsoft Edge WebView2 is an HTML/CSS/JavaScript library based on the Microsoft Edge rendering engine to embed web technologies into native apps.

WebView2 is automatically included as part of the operating system in Microsoft Windows 11.

For earlier Windows versions, WebView2 can be installed by the Evergreen Installer, or deployed by Windows Server Update Services or other deployment tools by the System Administrator.

Furthermore, an application can ship with the WebView2 library inside the app package. This way of supplying WebView2 does not install WebView2 on Windows, and the library is only available for the supplying application.

For more information about WebView2 see: https://docs.microsoft.com/en-us/microsoft-edge/webview2/

Usage in Fabasoft Folio Client packagesPermanent link for this heading

Starting with Fabasoft Folio Client 2025, the MSI installation packages FolioClient.msi and FolioClient-Win11.msi are identical, the package FolioClient-Win11.msi is only provided for backward compatibility and can be used both on Windows 10 and Windows 11.

The Webview2 library is no longer included in the installations package. Microsoft has rolled out WebView2 for Windows 11 and Windows 10 (only with up-to-date Windows Updates).

If the installation of WebView2 via Windows Update has been blocked or withheld via a software distribution policy, certain functions such as the Microsoft Office Add-ins will no longer work. On Windows 10, WebView2 must be installed either through Windows Updates or by using the dedicated Evergreen Installer to ensure full functionality.

Older Fabasoft Folio Client packages with local WebView2 (Fabasoft Folio Client 2022 – 2024)Permanent link for this heading

From Fabasoft Folio 2022 up to and including Fabasoft Folio 2024 two different installer packages where provided, with one assuming the presence of a system wide WebView2 installation and the other deploying a local installation of WebView2 when required.

These two differing deployment variants are no longer necessary or provided for newer versions of Fabasoft Folio, starting from Fabasoft Folio 2025 both FolioClient.msi and FolioClient-Win11.msi are identical and install the same variant of the Fabasoft Folio Client.

Difference of FolioClient.msi and FolioClient-Win11.msi for older Fabasoft Folio Client installationsPermanent link for this heading

From Fabasoft Folio 2022 up to and including Fabasoft Folio 2024 the Fabasoft Folio Client is available in two MSI-Installer packages:

  • FolioClient.msi
  • FolioClient-Win11.msi

The FolioClient.msi package size is about 400 MB and includes the WebView2 library. This installation package is working on every supported client as the WebView2 library is included in the package.

The FolioClient-Win11.msi package size is about 60 MB and does not include the WebView2 library. Installing this package requires to have the WebView2 Runtime already installed, either by using Windows 11 (that already ships with WebView2), or by installing the WebView2 with the Evergreen installer or software distribution.

Usage of FolioClient.msi in older Fabasoft Folio Client installationsPermanent link for this heading

Whenever the FolioClient.msi for Fabasoft Folio 2022 up to and including Fabasoft Folio 2024 is installed, the installer checks, if WebView2 is already available in the operating system.

  • If WebView2 is available in the operating system, the installer does not copy the WebView2 library to the Folio Client directory.
  • If WebView2 is not available in the operating system, the installer will copy the library to the Folio Client directory, in which case the local WebView2 library will be used from the Folio Client directory.

As the WebView2 library copied to the Folio Client directory is only updated when installing a newer FolioClient.msi, the operating system does not manage this directory for WebView2 security updates.

Fabasoft recommends:

  • Install Microsoft Edge WebView2 by the Evergreen installer or a software deployment tool to your clients, if WebView2 is not natively included with your Windows version.
  • Thereby, security updates are managed by Windows Update features or your deployment tool.
  • Deploy the FolioClient.msi or FolioClient-Win11.msi to your clients