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I have a few folders on a network share that I have set up to always be available offline using Sync Center. The sync works fine, but Windows no longer indicates which folders I've enabled sync on.

It used to indicate these by displaying a sync icon in the top left hand corner of any folder set to sync:

offline files sync

The sync icon no longer gets displayed.

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This happens to me as well. The green sync icon ususally isn't displayed. Also interested in a solution. – Adam Oct 23 '12 at 14:25
up vote 2 down vote accepted

Try in a Command Prompt that is Run as Administrator to enter this command:

regsvr32.exe cscui.dll

If this does not work, please clarify the following points :

  1. Are these offline folders, or do they only contain offline files?
    In other words, are they the root offline folders.
  2. Are there any other icons displayed on these folders?
  3. Do you have TortoiseSVN installed?
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Thanks, using your questions I realised I had tortoisegit installed which lead me to… making me realise I had more than 15 overlay icons in my registry. – Sean Bannister May 27 '15 at 20:29
Yes, this was exactly what I suspected was the problem. But you got there before I could spell-out the details. Well done. – harrymc May 27 '15 at 21:08

You could try refreshing the IconCache database:

  1. Click Start --> Computer.
  2. Click Organize (on the Tool bar) --> Folder and Search Options.
  3. Then click the View tab, and check-mark the Show hidden files and folders option, and click OK.
  4. Navigate to the following directory:

C:\Users\(Your User Name)\AppData\Local

  1. Find the IconCache.db file, and rename it (say IconCache.old) or delete it.
  2. Close the window, and restart the computer.

Windows will recreate the IconCache after the reboot, and hopefully your off-line files overlay will start working again. :)

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Unfortunately that didn't producere the green icons for me :( However, the one folder isn't sync'ed is now dimmed and has a grey cross next to it to indicate that it isn't available offline... – kennethkryger Nov 13 '11 at 20:15

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