Troubleshoot and resolve Apply update dry-run detected permission issues errors.
Troubleshoot and resolve Update Failed errors.
Troubleshoot and resolve Update Message Validation Issue errors.
How to troubleshoot and resolve cURL error 28: Operation timed out errors.
If you have remained on a WHMCS version that is past its End of Life (EOL) date for multiple years, we recommend that you update WHMCS as soon as possible. Make sure that you meet the system requirements for each EOL version that you upgrade through to reach a modern, supported version.
WHMCS automatically checks for new updates daily. You can also check for updates to WHMCS manually from within the Admin Area.
Before you update your WHMCS installation, we recommend several preparatory steps.