Freezing when "Running Package Scripts"

Hello,

Recently, I've tried running two different installations. One was a Microsoft Office update and the other was installing some design software. Both had the same problem - the Installer freezes once it gets to the "Running package scripts" part of the installation, with the install time remaining sticking at "Less than a minute." When this first happened with the Microsoft Office, I ended the program. Then when I was shutting down, it wouldn't let me shut down the computer until it ended, so I let it sit for a few hours and it finally worked. Is there any way to fix this issue?