I had that after getting a new computer with apparently a new version of Windows 10. The Edge browser that came with it will not open Daz Forums, nor several other sites I visit often. Hubby said there is new browser in Beta which he downloaded for me, and now I can read the Daz Forums again, and see my other sites. You can get it from here https://developer.microsoft.com/en-us/microsoft-edge/

Note, this is a beta, so you are part of the test group. I haven't noticed any problems, but they do update from time to time.