Hi,
The exe file extension should be corruption. Please download _exe fix from the SkyDrive, extract it and import the registry key.
https://skydrive.live.com/?cid=1F53C9234D966154&id=1F53C9234D966154%21186&sc=documents
File Association Fixes for Windows 7
http://www.winhelponline.com/blog/file-asso-fixes-for-windows-7/
Note: Since the website is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.
Niki Han
TechNet Community Support
