I have the same problem. Apparently, this conflict between KIS and ThinkerCad is nothing new. Please help me get ThinkerCad back, so I don't regret having purchased KIS. 1- Windows 10 pro Version 1903 2- The last available on the inernet 20.0.14.1085 (g) 3- I found out today, I installed the antivirus a few days ago. 4- No 5- Yes 6- The only exclusion I inserted was https://www.tinkercad.com/ 7- Shows no error. 8- Yes