Vivado installation error: Xilinx design tool, already exists for 2019.2, specify a different program program group entry 
Reason for error: vivado has been installed, and Xilinx Design Tools folder already exists
Solution: find the “Xilinx Design Tools” folder and delete it
Xilinx Design Tools folder path: C:\USER\USERNAME\AppData\Roaming\Microsoft\Windows\Start Menu\Programs
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