Troubleshooting Guide
You may encounter some common errors while using WHMCS. Before contacting support, run through the steps below to attempt to resolve the issue yourself.
Contents
Known Bugs
When we identify issues between releases, we publish individual patches (hotfixes) outside of the update structure.
For more information, see How we handle Bug Reports.
Module Command/Registrar Error
Module Command Errors are error messages that third party systems return via modules.
For more information, see:
Unknown Errors
Sometimes a third party system or module will provide a response that WHMCS is unable to recognise and interpret. This can result in the display of an Unknown Error message.
For more information, see Troubleshooting Module Problems.
Oops!, Blank, or Partially Loading Page
When you see an "Oops!", blank, or partially loaded page, an error condition has occurred.
For more information, see:
- Blank or Partially Rendered Pages
- Error Management.
- Server Modules.
- Domain Registrars.
- Common Troubleshooting Tips.
Payments Not Recorded
The callback setting configuration must communicate with your WHMCS installation. If it does not, the system may not successfully record payments in WHMCS.
For more information, see Troubleshooting Payment Record Issues.
500 Internal Server Error
The 500 internal server error is usually due to a customisation or an issue with the PHP configuration causing issues.
For more information, see PHP and WHMCS.