
The default behaviour of the App-V Sequencer is to exclude %LOCALAPPDATA% - this is a good thing and I don’t recommend removing this exclusion.

Firefox updates should be delivered via new App-V packages.
/cdn.vox-cdn.com/assets/964535/Mozilla_Web_Apps.png)

Before embarking on sequencing Firefox, please refer to this companion article - Prepare Mozilla Firefox for Enterprise Deployment and Virtualization - which covers configuring a Firefox installation for virtualizing. It’s a simple task to virtualize Firefox, as it lends itself well to application virtualization however getting it right takes a little preparation.
