objects disappear

[Anonymous]

When I turn on shadow or realistic mode in 3ds max objects disappear, but it will show again when I select the object. How can I fix this? in render it comes out fine.

I've treid alot and google can't show me the solution. I'm a student and my teather can't help me. It's also hepening to classmates and nobody knows why...

Using 3ds max 2015

Thanks

PS: I've already tried the block at the bottom with the blue back ground. It changes nothing. (adaptive degradation)

[Stefan_L]

There are some threads with similar problems, different reasons and some (partial) solutions.

Maybe switching off Improve Quality Progressively under Views/Viewport Configuration.../Display Performance helps, but this is not the cause, it only hides the symptoms.

Maybe you need to flip some face normals, maybe the objects are scaled wrong (try Reset XForm), maybe it's a material issue...

[Anonymous · Accepted solution]

thx Stefan_L,
I discovered yesterday it was the 'adaptive degradation' button, but it only works if I start 3ds max in administrator mode...