Who is AC Sync for?
For drivers, Assetto Corsa leagues, events and sim racing communities that want to keep cars, tracks, skins, apps or other community content up to date in the same way for everyone.
FAQ
Common questions about AC Sync and Sync Server.
This page contains common questions and short answers about AC Sync and Sync Server.
FAQ
Common questions about AC Sync.
What is AC Sync?
AC Sync is a Windows client for Assetto Corsa. You select a community server and a series. AC Sync then compares the files on your PC with the file list from the server.
What can AC Sync synchronize?
AC Sync downloads only content that is missing or outdated. Typical content lives in Assetto Corsa's content folder, such as cars, tracks, skins or apps.
Do drivers need to run Sync Server?
No. Drivers install only the Windows client. Sync Server is the backend for admins who provide content for their community.
Does AC Sync upload private files?
No. Sync runs from server to client. Your PC downloads content, but AC Sync does not upload private files from your PC to the server.
Can AC Sync run programs?
No. AC Sync is not a launcher and not an installer. It cannot run programs, installers or scripts; it only compares files, downloads them and places them in the selected folder.
Can AC Sync delete files or folders?
No. AC Sync cannot delete files or folders. It can add missing files and replace outdated files with the current version from the server. Local extra files remain in place.
How does AC Sync detect changed files?
It checks file size first. If needed, AC Sync calculates a SHA-256 checksum. That way it downloads only what is really missing or no longer matches the server list.
What happens if a download is interrupted?
Downloads are written to a temporary .acsync_tmp file first. Only when size and checksum match does AC Sync replace the real file. Broken downloads are discarded.
Can server files write outside the target folder?
No. AC Sync checks server paths before writing files. Files are not allowed to leave the selected Assetto Corsa folder.
How do I choose the correct target folder?
AC Sync tries to find your Assetto Corsa Steam installation automatically. You can change the folder. It should be the real Assetto Corsa root folder with AssettoCorsa.exe and content.
What does Auto-Sync mean?
Auto-Sync is optional. When enabled, AC Sync can wait for server changes in the background and update the selected series automatically.
What does autostart do?
Autostart is optional as well. If enabled, AC Sync starts with Windows, usually in the system tray. You can turn it off again at any time.
Why does AC Sync ask for a series password?
Admins can protect individual series on the Sync Server with a password. The client then asks for that password when loading the file list or downloading content.
What is Sync Server?
Sync Server is the service for admins. It manages projects or series, creates file lists with sizes and checksums and serves the files to AC Sync.
How should server content be structured?
A project usually represents a series or event. The Assetto Corsa files live below content. The server turns that into the list that the client compares.
How are admin actions protected?
Upload, delete, rename and folder creation are admin features. They can be limited to local access and additionally protected with an admin token.
Is AC Sync free?
Yes. AC Sync and Sync Server are provided as freeware. License and download information is available in the legal notice and on the downloads page.