A Microsoft file hosting and synchronization service.
Hi Elise, this is an ok response, but could you please provide a little more detail and perhaps a link if there is one to an Official https://support.microsoft.com/ page please? Clearly filecoauth.exe is a Microsoft executable and its Microsoft Defender that's blocked it for a reason, so be good to understand what the risk is before simply clicking the "Allow access" button. Many thanks I've also got this popping up now so good to get a tiny bit more detail please. Many thanks Geoff