Hello unfortunately there is no compatibility mode for Firefox at this time. Your DVR' s page was built for Internet Explorer. If this helped answer your question, please Mark as Solution.

Thanks, that's a shame...

Compatibility mode is a feature of IE in version 8 and later. When active, Compatibility View forces IE to display the webpage in Quirks mode as if the page were being viewed in IE7.

What kind of issues are there that require compatibility view?

Any specific errors in the Web Console?

• https://developer.mozilla.org/en/Tools/Web_Console

Firefox is W3C compatible and doesn't have settings for compatibility with other or older browsers. If there is code optimized for IE that doesn't work with modern browsers the you are out-of-luck.

Based on a flurry of new threads around the time Firefox 52 was released, some DVRs require special plugins that no longer are allowed in Firefox 52 and later. So using Internet Explorer may be necessary for that reason, too.

Some DVR's use IE because of ActiveX controls.

Thanks, for all your responces, to answer one question - all i get in FF from the DVR is a title page with nothing else (no errors), I now know that it should have a login window. So, from all the comments it appears that the DVR software is too old for the latest FF. I will have to suffer with IE for the DVR!!! Regards Dave