It would depend on what security software you’ve got installed. It sounds like it’s MS Windows Defender included with Windows? I wouldn’t normally expect Defender to have an issue here unless it’s been heavily modified, but we can come back to that if necessary. Short on time atm, can follow up more later if necessary. Found some other ideas here though: https://support.google.com/chrome/thread/41212037/google-chrome-installation-stuck-on-on-your-marks?hl=en
There are some ideas there, I would be very careful with some of them, but the ‘troubleshoot compatibility issues’ one sounds interesting.
Also, any chance you’re trying to install it thru some kind of remote access tool, such as Remote Desktop? Or are you at the physical screen/keyboard of the system itself?