Are you able to open your Anti-Virus and go to the Quarantine or Exceptions List?
If you can add it to the Exceptions List then you should be good to try installing it.
If the Install file is in the Quarantine, try Restoring it, then try again. If it still removes it then Quarantine it first by Adding it to the list, then Restore, and try again.
If the above tips don’t help, then you might get assistance from your local Desktop/Help Support or a Network Administrator.
I believe there’s also a longer way to get the install package from UiPath directly if none of the above resolves the issue. For me, though, just Restoring it from Quarantine seemed to work.