If the installation works in another user account, it's some background process in your user account that must be causing the problem.
First thing to try is starting up holding the Shift key - that puts you into Safe Mode, and your background processes won't start up. Then try installing again.
If that doesn't work, please take a look at your System Preferences>Users & Groups>Login Items to see if you might spot the culprit. Try removing that (temporarily - remember where and what it was, so you can add it back in later), and try again.
Adobe Community Expert / Adobe Certified Instructor