Recent versions of both Firefox and Chrome no longer support NPAPI plug-ins which are what most manufacturers including Foscam use for live camera viewing.  This is not a change made by Foscam but rather the web browser companies.

We recommend using iOs and Android apps to view your Foscam cameras since they are specifically designed for this purpose and support remote access in a more seamless way (P2P).

If you must use a browser, please use Internet Explorer (not Edge) browser.