Your computer's own antivirus or security settings can block an installer or updater from downloading, opening, or completing, whether you're installing something new or updating a product you already have. This applies to:
Arcade
Co-Producer
Creator
Output FX (subscription and perpetual): Portal, Thermal, Movement
FX Expansions (perpetual only): Chaos, Ignition, Beyond 4/4, Current, Spacetime
This doesn't cover Kontakt-based instruments, or errors specific to using Output Hub or Native Access to download, unpack, and install them.
On Windows, your antivirus might quarantine the installer file before you can download or run it. On Mac, your security settings might block the installer from opening or completing after you've downloaded and run it.
Before you start
Confirm your computer meets your product's system requirements
Make sure you're signed in as an administrator on your computer
Quit your DAW before installing or updating
We recommend installing to the default location the installer suggests
Windows
If your antivirus blocks the installer download, check whether it's been quarantined. On Windows Defender:
Open Windows Security
Click Virus & threat protection
Click Protection history
Find the blocked installer and select Allow or Restore
If you're using a third-party antivirus instead (Norton, McAfee, Avast, and similar), check its quarantine or protection history section the same way.
macOS
If you try to open the installer and see "[Product]" cannot be opened because the developer cannot be verified, or you get to the end of installation and see The installation failed, your Mac's security settings are blocking it.
Go to System Settings > Privacy & Security > Security and make sure App Store and Identified Developers is enabled
Go to Files and Folders, expand the Installer field, and enable the Downloads folder if it isn't already
If none of the above works, delete any old or incomplete installer files from your Downloads folder, restart your computer, and download a fresh copy