Receiving Error Code 643 when trying to install an update Tuesday, June 9, 2009 at 12:12 pm Windows Vista Annoyances Discussion Forum Posted by Stephen Hansen (23 messages posted) I am running Vista Ultimate 64-bit on a desktop. I have been trying to install the following Windows Update: Security Update for Microsoft XML Core Services 4.0 Service Pack 2 for x64-based Systems (KB954430). I keep getting this error: 643 ("WindowsUpdate_00000643" "WindowsUpdate_dt000") I am running SP2 on this PC. Thanks in advance. Responses to this message: re: Receiving Error Code 643 when trying to install an update (Jacob6601: Tuesday, June 9, 2009 at 6:33 pm) All messages in this thread [show all] Receiving Error Code 643 when trying to install an update (Stephen Hansen: Tue, Jun 9, 2009, 12:12 pm) re: Receiving Error Code 643 when trying to install an update (Jacob6601: Tue, Jun 9, 2009, 6:33 pm) Reply or follow-up to this message Search this forum Start a new thread on a different subject Report abuse of the forum Return to the Windows Vista Discussion Forum