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With the release of Windows 7 SP1 a hotfix has been included that makes it possible to once again catch user mode exceptions on 64 bit development machines. (see the excelent writup “the case of the disappearing onload exception” here for details and an explanation of what is exactly going on.

To disable the filtering on Windows 7 SP1 development machines add the following registry key:

• Locate the registry subkey: HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options
• Create a registry entry of the DWORD32 type named “DisableUserModeCallbackFilter”
• Set the value of the DisableUserModeCallbackFilter registry entry to 1

This entry was posted on Tuesday, March 15th, 2011 at 10:44 am and is filed under Overflow. You can follow any responses to this entry through the RSS 2.0 feed. You can skip to the end and leave a response. Pinging is currently not allowed.