My solution for Windows 10 is: Safari (yes, the Apple Browser) With Firefox and Opera as well as an old Internet Explorer version, access was still possible in some cases, but fonts were often not displayed correctly or not at all, no live-stream access or whatever.
If a camera has to install an ActiveX plug-in, this fails with all modern browsers because - for security reasons - they no longer support ActiveX. Since I've been looking for what feels like an eternity for a solution to configure old IP cameras via a browser under Windows10, I would like to share my solution.