To turn off sync folders in Office 365, follow these steps: 1. Open the Settings Panel in Office 365. 2. Select "Sync" from the menu on the left. 3. Uncheck any folders you do not want to sync with your computer. 4. Click "Save" to save your changes. You can always turn sync back on by following the same steps and checking the folders you want to sync. This will ensure that your computer and Office 365 are in sync.