Last week the production server went down at one of my clients(woops…). The issue was that the IIS worker process, W3WP.exe was crashing when the users tried connecting to some websites(and webservices). In fact, it wasn’t the W3WP.exe itself who made the server hang, but DW20.exe. DW20.exe is Dr.Watson, the Windows Error Reporting tool and was trying to do something when the error was happening on the server.
We’re still investigating the root cause of the issue, but disabling the Windows Error Reporting tool did the trick:
- Go to Control Panel.
- Click System.
- Go to the Advanced tab.
- Click Error Reporting.
- Click Disable error reporting.