Ok, so at 0745 this morning, and up to that point I could import .glb files no problem into my presentation. At 0800 I got this message and can no longer do it. Have tried re- installing, repairing, reboot, Have tried it on 3 other PCs and none work. My work laptop however, which has not been connected to the internet for a few days works no problem.

Latest install PPt, Windows 11 pro.

I've tried every importable format and nothing works. What has changed and can anyone help?