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Why do you receive error message "Failed to prepare repositories"?
This article applies to all Sandbox versions
Issue: While installing the Sandbox, the installer fails at the “prepare repositories” step with:
Even though the system has internet access and the repos are functional.
Cause
The script install.sh uses dnf check-update to verify repositories. However, this command returns:
0: No updates available (success)100: Updates available (still success)>1: Real error
The script only treats 0 as success, so it fails when updates are available (100).
Solution
Ensure that you have followed these steps before running the installer:
Step 1: Install EPEL (if needed)
Step 2: (Optional) Create sandbox user
Step 3: Install tools like 7zip
(Optional) Fix the script logic to allow both 0 and 100:
Result:

If you require further assistance, please follow these instructions on How to Create Support Package?, before creating a support case or chatting with our support engineer.
See the "Technical Datasheet" for a complete list of features: https://docs.opswat.com/filescan/datasheet/technical-datasheet