When you launch Photoshop CC (20.0), it displays a Photoshop.exe - System Error dialog:
The Program can't start because D3DCOMPILER_47.dll is missing from your computer. Try reinstalling the program to fix this problem.
To install the D3DCompiler update, see Microsoft's support article: https://support.microsoft.com/en-us/help/4019990/update-for-the-d3dcompiler-47-dll-component-on-windows.
After installing the update, restart your computer.
Launch Photoshop CC 2019 to check if your issue is resolved. If the issue isn't resolved, perform the steps mentioned in Solution 2 below.