Troubleshooting iDisk Sync issues

Resolution

Click the Sync icon (the icon to the right of your iDisk icon in the Finder sidebar) to try manually syncing.

If that does not work, use these steps:

1. Make sure your Internet connection is working as expected.
2. Download and install the latest available version of Mac OS X.
   Note: If you are already using the latest version of Mac OS X (nothing appears in Software Update, for example), restart your computer, then go to step 3.
3. Try syncing your iDisk again.
4. Make sure you have enough free space available on your Mac OS X volume for iDisk Sync. You should have at least 20% more free hard drive space than the total size of your iDisk (for example, if your iDisk is 20 GB, you should have at least 24 GB available on your hard disk). If you do not have enough free space, disable iDisk Sync (click the Stop button in the iDisk pane of MobileMe preferences) or reduce the size of your iDisk before enabling iDisk Sync.
5. Disable iDisk Sync (click the Stop button in the iDisk pane of MobileMe preferences, in System Preferences), restart your computer, and connect directly to your iDisk. (From the Go menu, choose iDisk, then My iDisk.) If you are able to connect to your iDisk, turn iDisk Sync on again.
6. If the issue persists, reset iDisk syncing on your computer:
   
   1. Turn off iDisk Sync (click the Stop button in the iDisk pane of MobileMe preferences, in System Preferences).
   2. Restart your computer.
   3. From the Go menu, choose Home.
   4. Open the Library folder.
   5. For Mac OS X 10.4 or earlier: Remove the Mirrors folder
      For Mac OS X 10.5: Remove the FileSync folder
   6. Restart your computer.
   7. Re-enable iDisk Sync.
7. Confirm that your keychain is working as expected.
8. Mac OS X 10.5.x only: If you are unable to sync iDisk successfully from multiple computers, or you only are using one computer and the above steps do not resolve this issue, disable iDisk Sync from all but one computer, and from the last computer, hold the Option key while disabling iDisk Sync (hold Option until the Stop button changes to Start). This will reset the iDisk Sync state of the iDisk (this does not delete any data from your iDisk).
9. If you are still unable to successfully sync your iDisk, contact MobileMe support. If you use Mac OS X 10.5, please make sure that step 8 has been completed before contacting support.