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This morning I was watching the CPU graph of a Windows 7 Home laptop and noticed that every few seconds, the CPU would spike several percent. I watched the processes and determined that it was mobsync.exe (Offline Files) that was the culprit.

I tried the usual steps that Googling turns up, and clicking the Manage Offline Files link to bring up the Offline Files dialog to click Disable Synch does not work because the dialog will not display. This makes sense since everything I have read indicates that Offline Files is not even included/supported in the Home version, so I am at a loss as to why it is running at all, let alone why it is sucking up CPU cycles. It seems that pressing Win+X to access the Mobility Center launches the process even though the function is not even available (and thus not useful) in the Home edition.

The two Offline Files services (csc and cscservice) do not exist on a Home edition system, so disabling them won't work. I also tried manually opening the Offline Files dialog with the command rundll32.exe Shell32.dll,Control_RunDLL cscui.dll, but just like clicking the link in the Control Panel, it does nothing.

Of course I can just kill mobsync, but it just runs again whenever the Mobility Center is opened (and possibly other times).

Perhaps a future update will stop a non-functioning/applicable feature from running unnecessarily and using up resources, but in the meantime, how can it be properly disabled (of course the Group Policy editor is not available on a Home version). Some people suggest hacking it by removing execute permissions from the file which should work, but is ugly and certainly not ideal.

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Ho To Geek has a solution for this have you tried that? – avirk May 31 '12 at 16:11
@avrik, like I said, the Offline Files dialog is not available in Home, and the article you linked to says right at the beginning: Note: This process disables the Offline Files feature which is not available in Home versions of Vista or Windows 7. – Synetech May 31 '12 at 18:19
Check your Windows Services for "Offline Files", disable the service, then restart the PC. – Moab May 31 '12 at 19:37
"If you have a home version of Vista or Windows 7, you will see mobsync.exe running in task manager, but closing out of Sync Center should stop the process. If you were using Sync Center and ActiveSync to manage a mobile device and no longer need it, you can uninstall ActiveSync software and it should stop mobsync.exe as well." – Moab May 31 '12 at 19:39
@Moab, 7 Home does not have an Offline Files service and I cannot find ActiveSync. This laptop does not use any sort of sync (in fact, nothing even shows up in the Sync window because it has nothing to sync with). Offline Files should not even be available in Home, yet mobsync runs whenever Win+X is pressed. Seems like Microsoft's left hand doesn't know what its right hand is doing. – Synetech May 31 '12 at 20:42

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