Hi all - I'm posting this message here in the Vista forum as a starting point. If anyone thinks that it should be in another, let me know. I have Vista Home Premium running on a Dell. I also have a Window Mobile SmartPhone, which I sync up with my desktop. Lately, clicking on various links will cause a popup that says: Title: Internet Explorer Security Body: A website wants to open web content using this program on your computer. The program name is Microsoft Sync Center - C:\windows\system32\mobsync.exe. In fact, opening the link to post a new question caused this! Does anyone have ANY idea as to what's going on? I don't know EXACTLY when this started - within the last couple of weeks? And I've had my phone syncing for a couple of months now. Is it possible that a Windows Update has changed something on me? I can't find anythign like this via google. It's actually starting to annoy me. Thanks, Phil