AutoCAD freezes when I click any button

[huxj]

Two weeks ago, the software can run normally. But at this week ,after the software started(like the following picture When I move the mouse hover over a button, this button is highlighted.

But if I click any button, The software interface seems like becomes a picture(like Autocad loses focus)，

I can't click anything including  minimize, close (no highlight),just like there pops up a dialog box，but you can't see it, i have tried esc, Alt+tab but it's not working

I tried multiple versions of AutoCAD（2017、2018、2019），meet the same problem 

Are there god people who can help me?

My computer information：

CPU:I7-6700

RAM:8G

core graphic card

windows 10 1709

[imadHabash]

Hi,

There are many reasons for such a problem that can be fixed . i suggest to try some solutions mentioned here . >> Click <<

Regards,

[huxj]

I tried most of the solutions and they didn't work. 

But, the dwg  TrueView can work normally，I suspect this is  a license manager problem，but I can do nothing

[ennujozlagam]

hello, it could be affected by Windows OS updates, check your updates installed maybe roll it back to the last one. thanks