I know is an old post but I have the same issue as the original post. Have read a few messages on this, many suggestions, from resetting prefs to default, unistalling and re-installing again, clearing cache and nothing works, can someone here tell me or guide me to the right answer before I call it quits on Fusion 360? Keep in mind that I just started learning it. Certainly there will be answers like "let me escalate to a higher level technician" or something to that effect, they all come back with the same suggestions every time, cache, reinstalling, resetting prefs, done it twice. Also, there no way to re-sync materials library to the cloud service for download.
As the product manager posted that image that shows a different library, of course is different, that is the appearance library, we're talking about the Materials Library, they are different, or am I wrong? Can someone help me before I ditch Fusion? I really like it but with just a few materials available, with 10% available only is very hard to render designs with with just Cherry, Walnut and mahogany. That's just the wood, the other libraries suffers form the same issue, I'm about to give up, please help me, appreciated.