ADUS v1.1.0. can be downloaded via http://storage.scorpionsoft.com/apps/2fa/ADUS/1/1/0/ADUSSetup.exe
Note: When you install ADUS you will see a prompt to hot-fix your AuthAnvil 2FA server. This hot-fix only applies to 2FA v5.0 servers. Please do not apply this hot-fix to 2FA v5.5 servers as it is not compatible.
See this article for installation information https://helpdesk.kaseya.com/hc/en-gb/articles/360034319592