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6/19/2006 3:32:01 PM    Setting ActiveX control to be default mime handler
I have an ActiveX control that has been registered as the default handler for  
  
a given MimeType. Pre SP2 this worked fine in Windows XP. Since the update, I  
  
cannot achieve success.  
  
How (what registry settings) is the temp file name controlled when a  
  
document is downloaded into the user cache? For instance, files with a .TIF  
  
extension are placed into the user cache using .TIFF instead. On other  
  
machines, I see the opposite--.TIFF files cached with .TIF.  
  
What are the registry "checks" that are used when retrieving a document and  
  
handling it using an ActiveX control?  
  
Thank you.