Answers.Body: <p>Generally, look for these logs:</p>
  
  <ul>
  <li>CiviCRM's log (<code>sites/*/files/civicrm/ConfigAndLog/</code>)</li>
  <li>HTTPD error log</li>
  <li>PHP error log</li>
  </ul>
  
  <p>Unfortunately, the locations of these differ by environment, and I don't know an answer for Windows Server.</p>
  
  <p>Posted a similar (but broader) question: <a href="https://civicrm.stackexchange.com/questions/376/where-should-one-look-for-logs-when-debugging-a-new-problem">Where should one look for logs when debugging a new problem?</a></p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-11-18T16:54:58.250Z
Answers.LastActivityDate: 2015-11-18T16:54:58.250Z
Answers.LastEditDate: 2017-04-13T12:53:13.167Z
Answers.UserDisplayName: Tim Otten
Body: <p>I've been working with CiviCRM for almost a year now. One problem we have is we frequently see the Internal Server Error 500 white screen of death. In particular, we cannot use the contact de-dupe tools. When we try to use them, the page runs for about a minute, then we get the error 500.
  Does anybody know how to diagnose what is actually failing when the error 500 happens?
  We are running CiviCRM 4.6.9 within Drupal 7 on Windows Server. Thanks for your help!</p>
  
Tags: <drupal><error>
Title: Internal Server Error
ThreadText: # Internal Server Error
  
  (Asked by: username_0 on 2015-11-18)
  
  I've been working with CiviCRM for almost a year now. One problem we have is we frequently see the Internal Server Error 500 white screen of death. In particular, we cannot use the contact de-dupe tools. When we try to use them, the page runs for about a minute, then we get the error 500.
  Does anybody know how to diagnose what is actually failing when the error 500 happens?
  We are running CiviCRM 4.6.9 within Drupal 7 on Windows Server. Thanks for your help!
  
  **Tags:** drupal, error
  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_1 on 2015-11-18. Score: 2
  
  Generally, look for these logs:
  
  * CiviCRM's log (`sites/*/files/civicrm/ConfigAndLog/`)
  * HTTPD error log
  * PHP error log
  
  Unfortunately, the locations of these differ by environment, and I don't know an answer for Windows Server.
  
  Posted a similar (but broader) question: [Where should one look for logs when debugging a new problem?](https://civicrm.stackexchange.com/questions/376/where-should-one-look-for-logs-when-debugging-a-new-problem)
  
  
  ---
  
  