Below is a blog post exploring these options and how you can access them.
Blue screens of death began to cascade, one on top of the other, filling the emulator window. The fan on Elias’s physical laptop spun up to a roar. The browser tab was using 100% of his local CPU. windows 10 emulator online
If you need to use a version of Windows 10 to test how a website behaves on Microsoft Edge or Internet Explorer, cloud testing platforms provide live sessions. Below is a blog post exploring these options
While DistroTest primarily focuses on Linux distributions, it occasionally offers Windows Server environments or similar operating systems that function similarly to Windows 10. The browser tab was using 100% of his local CPU
Numerous developers have created open-source, in-browser simulations. Example: fatihhsezzzer/Windows-10-Desktop-Simulator
Finding a true "Windows 10 emulator online" requires distinguishing between simple visual simulators and heavy-duty cloud virtual machines (VMs). Most web-based results are either UI simulators (which look like Windows but can't run .exe files) or cross-browser testing tools
Why someone would use an online Windows 10 environment