This Support Bulletin is applicable to Toshiba portable computers that have a built-in Chicony webcam and are running a 32-bit version of Windows Vista Home, Vista Home Premium, Vista Business, or Vista Ultimate.
The built-in webcam enters its own sleep state when not in use. Applications that use the camera should be able to wake the camera from its sleep state, but may not be able to do so after the computer is awakened from the Windows Vista Sleep state.
The following error messages indicate that the camera can not be awakened from its sleep state:
"The webcam is not connected" -- in Yahoo Messenger, after clicking My webcam and selecting the Chicony USB 2.0 Camera as the Camera Source.
"Locked by another application" -- when clicking the Start Camera button on the Camera Assistant software's Web Camera tool bar (when there is not another application using the webcam).
Install the Hotfix for Microsoft Windows (KB931812).
1. Review the background information in Microsoft Knowledgebase Article 938315
2. Review Microsoft Knowledgebase Article 931812 and fill out the Web Submission Form for the Hotfix.
Microsoft will send an e-mail message with a download link for the Hotfix.
3. Click the link in the message to download and install the Hotfix.
The built-in webcam should now respond correctly to requests from applications.