This is a very frustrating bug in Windows Vista Business Offline File Sharing
capability. MSFT, you should be ashamed of yourselves for letting this
through QA.

If you accidentally select a folder for Offline File Sharing which has
sub-folders that you don't own or have permission to read/write, Offline File
sharing will happily add these sub-folders to the "sync" list. The next time
you try to sync, you will get a million errors saying these folders cannot be
sync'ed because you don't have permission.

Ok, so far, not that bad. You realize you made a mistake a selected folders
that you shouldn't have. So, you go back to these sub-folders, right click,
try to de-select Offline File Sharing for these folders.

Guess what? Catch 22. *Now* offile file sharing realizes you don't own
these folders and tells you you cannot turn off Offline File sharing because
you don't have permission to access these folders.

So, now you're screwed. You can never turn off offline file sharing on
these subfolders, and because you don't own them, you will perpetually get
errors every time you try to sync.

The problem, I assume, is that Offline File sharing should have realized the
first time you tried to add these subfolders to the sync list that you don't
own them, and thus, it should have refused to allow you (or allow itself) to
add them to the Offline File sharing sync list in the first place.

Please, MSFT, fix this. This is pretty terrible. And, it has essentially
forced me to completely disable Offline File Sharing on my Vista machine.
Unfortunately, because it was a feature I heavily relied upon on WinXP (and
which worked pretty flawlessly for me in WinXP, too).

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http://windowshelp.microsoft.com/com...orking_sharing