UiPath Studio ceases to respond to any action after trying to create or change a varIable

UiPath Studio ceases to respond to any action after trying to create or change a varIable in the list of variables.

UiPath Studio 2016.2.6442 \ OS Version: Win 10 Pro \ .NET 4.0.30319.42000

Did a Studio restart helped?

No. Restart didn’t help. This appears on my new HP notebook having Win10.
Tested issue on the same type of notebook of my collegue. Is the same. But
on Win7 it works correctly. Early I wrote about other problem on my
notebook with Win10 (invisible connector lines in flowchart). Looks there
are linked problems.

Hmm, you can also try a dotnetframework update and maybe a 2017.1 upgrade…
Do you see any UiPath errors in event viewer?

I see a 4 Mb of logs in Studio.log file. The more suitable line is 16:32:32:948 => [ERROR] [Orchestra.LogHelper] [1] Application crashed | [InvalidOperationException] System.InvalidOperationException: ‘{DependencyProperty.UnsetValue}’ is not a valid value for property ‘Foreground’.

I’ve solved the problem by downgrade of .NET Framework after patch KB4033393 (.NET Framework 4.7.1) has been uninstalled!!!

Hi How did you downgrade the .NET Framework ?? Because i face the same issue while creating a variable system gets hanged.