The solution to the NSIS Error Installer integrity check has failed error when installing pycharm.

The problem in the above picture occurs when pycharm is installed on win10

Solution

First find the location of pycharm.exe, create a shortcut about pycharm.exe [right click -> create shortcut], a shortcut icon appears; then, at the shortcut icon [right click -> properties -> target box] See Figure 1. At this time, enter '/NCRC' in a blank space at the end of the target box, that is,  /NCRC  /NCRC

Click the shortcut key to run to install.

Figure 1:

Hope to help everyone