Server Communication Errors

Problem

You see the following error while using WHMCS:

An error occurred while communicating with the server. Please try again

Cause

This error appears when a problem is preventing communication with the WHMCS server. This may be due to several different causes.

Troubleshooting

To determine the cause of this error, try the following troubleshooting steps:

Check for a System URL Mismatch

To check for a system URL mismatch, compare the following URLs:

  • The URL that you are using to access WHMCS in your browser.
  • The WHMCS System URL setting in the General tab at Configuration () > System Setup > General Settings.

If these values do not match, see System URL Mismatch below.

Check for a PHP Error

To check for a PHP error:

  1. Enable Log Errors in the Other tab at Configuration () > System Setup > General Settings.
  2. Reproduce the error in WHMCS.
  3. Go to Configuration () > System Logs.
  4. Examine the log entries for errors.
For steps to resolve various PHP errors, see Troubleshooting PHP.

Use Browser Tools

Use your browser’s network tools to identify the problem.

For example, in Chrome™:

  1. Go to the page on which you saw the error in WHMCS.
  2. Right-click on the page and choose Inspect.
  3. Choose the Network tab.
  4. Reproduce the error.
  5. Click the entry that appears in the Name column at the same time as the error occurs.
  6. Choose the Response tab.
  7. Use the code that appears in the tab to identify and resolve the error.

Solution

System URL Mismatch

To resolve this issue, make certain that you are accessing WHMCS with the exact URL in the WHMCS System URL setting in the General tab at Configuration () > System Setup > General Settings.

For steps to update the WHMCS System URL setting, see Update the System URL.

PHP Errors

Use the PHP error to identify and resolve the problem.

For steps to resolve various PHP errors, see Troubleshooting PHP.
troubleshooting system-url

Last modified: August 23, 2024