Validate Backup Data

Arq keeps an internal database for active backup plans which it uses to reduce the number of times it has to query the storage location during a backup activity, and to facilitate searching.

If there’s a discrepancy between Arq’s database and the actual files at the storage location, click on the backup plan on the left under “Active Backups”, click on the gear icon, and pick “Validate Backup Data Now”. Arq will recreate its internal database by querying the storage location.


To uninstall Arq completely, launch Arq, click “Settings” on the left, click the “Uninstall” button, check the “Also delete configuration files” checkbox, and click Uninstall.

If the Uninstall button isn’t reachable, uninstall Arq manually.

Create a script in your home directory:


killall Arq
launchctl unload /Library/LaunchAgents/com.haystacksoftware.ArqMonitor.plist
/bin/rm -f /Library/LaunchAgents/com.haystacksoftware.ArqMonitor.plist
sudo launchctl unload /Library/LaunchDaemons/com.haystacksoftware.arqagent.plist
sudo /bin/rm -f /Library/LaunchDaemons/com.haystacksoftware.arqagent.plist
/bin/rm -rf /Applications/
/bin/rm -rf /Library/Logs/ArqAgent
/bin/rm -rf "~/Library/Application Support/Arq"
/bin/rm -rf "/Library/Application Support/ArqAgent"

Run the script from Terminal:

sudo /bin/bash ~/Downloads/