Hi everyone, I sent out a request about Multimedia Messaging and if anyone is using it on Exchange 2000. I have noticed an issue once MediaPlayer9 was installed my ability to send out multimedia messages fails or playback multimedia message embedded in the Outlook client fails with an error message that the error statement: Error Details window appears: Windows Media Player cannot play the file because the specified protocol is not supported. In the Open URL dialog, try opening the file using a different transport protocol (for example, "http:" or "rtsp:"). Where might the Open URL dialog window located? Is this Outlook properties or MediaPlayer9 properties.... I can not find this anywhere in the knowledgebase or google searches. Any help would be greatly appreciated. Thanks, Dave Confidentiality Notice: This e-mail message, including any attachments, is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message.