Issue: sometimes we may get this error message, how can we solve?
The code execution cannot proceed because VCRUNTIME140.dll was not found. Reinstalling the program may fix this problem 


Reason: This is because the VC2015 has problem.


Solution: 

1. Go to control panel, uninstall VC2015

2. Unzip ZWCAD installer, install VC2015

3. If problem remains, then go to below link to download the Microsoft runtime library to install

https://docs.microsoft.com/en-us/cpp/windows/latest-supported-vc-redist?view=msvc-170 

4. If problem remains, try to download the tool from below link, and run it to troubleshoot.
https://1drv.ms/u/s!AoEy4UaZM2xGhUYbHkmPkKXfIKo4?e=8APjQT
5. If problem remains, then download the DirectX Repair tool to troubleshoot. Refer the corresponding point in below KB.
https://zwcad.freshdesk.com/a/solutions/articles/24000026461