You may need to reinstall ACS if your initial installation was improper, you replaced your hard drive or computer, you accidentally deleted some programs or modules, or your files are corrupt.

Generally, reinstalling ACS involves backing up your data, uninstalling ACS, downloading the latest version of ACS software, then restoring your backup.

 

Installing ACS Software Upgrades and Minor Revisions
ACS Technologies Downloads
ACS 11.7 Release Notes
Getting Additional Help
ACS System Requirements