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Configuring Offline Files
Three steps are involved in setting up a user’s Windows XP Professional computer to use Offline Files:
Enabling the Offline Files feature
Configuring Offline Files settings to control caching options and
disconnection response
Making files or folders available offline
Enabling Offline Files
Before you begin the Offline Files configuration, ensure that Fast User Switching is disabled on the client. To do so, open the Control Panel and select User Accounts. From the list of tasks presented, choose Change The Way Users Log On Or Off, and clear the Use Fast User Switching check box.
Check the box to enable Offline Files. This page is also used to configure Offline Files settings, which will be discussed in the next section. The next step is to make content available offline by enabling the use of Offline Files on your computer:
1. Click the Start button and open My Computer.
2. Select the Tools menu and choose Folder Options.
3. Select the Offline Files tab.
Configuring Offline Files settings
On the Offline Files page, in addition to enabling Offline Files, you can also specify:
• Whether the system should synchronize all offline files before logging on to the computer.
• Whether the system should synchronize all offline files before logging off when you restart, shut down, or log off the computer. (This will ensure that you have the most up-to-date versions of the files you have designated to be available offline.)
• Whether to enable reminders that will cause a notification balloon to appear over the system tray when a computer goes offline. (If you select this option, you can also specify, in minutes, how often the reminder balloon should be displayed after the computer goes offline.)
• Whether a shortcut icon for the Offline Files folder should be created on the desktop.
• Whether to encrypt offline files as an extra security precaution for the user who has sensitive data on his or her hard drive.
• The amount of disk space allocated for storing offline files that are automatically cached because an administrator has specified that they be made available offline. This does not affect the files that the user has made available offline.
You can also use these buttons:
• Delete Files: Use this button to remove selected offline files from the local computer. (This doesn’t delete files from the network location.)
• View Files: Use this to view the contents of the Offline Files folder, which shows all files that have been made available offline, along with their type, synchronization information, availability, access, location, size in kilobytes when last modified, and the status of the server.
• Advanced: With this button, you can choose what will happen if you’re working online (connected to the network) and the connection is lost. Your choices are to have the system notify you that you’re offline and allow you to continue working with network resources offline or to never allow the computer to go offline. (On the Offline Files tab, click on the Advanced button to reach the Advanced Settings page, where you can create an exception list and designate the behavior when a particular server gets disconnected.)
Making files/folders available offline
To make a file or folder available offline, you must first designate it as shared. (Note: You cannot share an individual file—you must share a folder or drive. However, when you share a folder, the files inside that folder are shared, and you can then individually make any of those files available offline.) Follow these quick steps:
1. Right-click the folder and select the Sharing option from the pop-up menu.
2. Click on the Share This Folder radio button to create the share.

After enabling Offline Files, navigate to the selected shared file or folder in My Computer or My Network Places. Highlight the file or folder name, either select the File menu or right-click the file or folder, and choose Make Available Offline.
Set cache options on shared folders
Offline Files works by creating a cache on the computer’s local hard disk and storing the shared network files that are designated as offline files in this cache. You configure the caching options for each shared folder made available offline.
The caching options are set from the Shared Folders node in the Computer Management MMC (accessed by right-clicking My Computer and selecting Manage).
Right-click the shared folder for which you want to set caching properties and select Properties. On the General tab, click the Caching button. The Caching Settings properties box allows you to enable caching of the shared folder.
Three options are available to control how the files in the folder will be cached:
• Manual Caching For Documents: With this option, the only documents that will be cached are those that the user specifically designates to be available offline.
• Automatic Caching For Documents: With this option, when a user opens a file in the shared folder, it will be automatically downloaded and made available offline without the user specifying that it be an offline file. Older copies of a file will be deleted automatically to make room for files that have been accessed more recently. With this option, a file that the user has not opened while online will not be available offline.
• Automatic Caching For Programs: All files in the folder will be made available offline. This option is used when the data in the folder is read-only, as with shared network applications. It shouldn’t be used if users will change the data in the folder.
Tip: The default caching setting is Manual Caching For Documents.

Enabling Offline Files
After you’ve set up the computer to enable Offline Files and made the selected files or folders available offline, other users can connect to the offline files, work with them over the network, and continue working with them after the connection between your computer and theirs is broken.
Working offline
If Offline Files is configured to display a balloon notification, when the network connection is broken, the user will see an Offline Files icon appear in the status area to the right of the taskbar buttons on the Windows XP taskbar.
When the network connection is restored (for example, when you plug your laptop back into the docking station or plug a live Ethernet cable into its PC Card NIC), the status bar information will change, and modifications that you've made to offline files since the disconnection will be updated to the network files automatically.
Synchronizing offline files
You can synchronize offline files manually. You can also schedule them to be synchronized at a specified time with the Synchronization Manager.
The two types of synchronization are:
• Full synchronization: A full sync takes more time, but it ensures that every file made available offline is the most up-to-date version.
• Quick synchronization: A quick sync will provide you with a full version of each offline file, but it may not be the most up-to-date version. It is, however, much faster to perform.
To open the Synchronization Manager, select Start | All Programs | Accessories | Synchronize. The Synchronization settings that can be configured when you click the Setup button include:
• Items that should be synchronized when you log on or off. You can specify that this occurs automatically or that the system prompts you before synchronizing.
• Items that should be synchronized when the computer is idle. Using the Advanced button on this tab, you can set an idle time (in minutes) when synchronization should occur and specify how often it should take place while the computer remains idle.

Tip: Check the last box in the Idle Settings dialog box to prevent synchronization from occurring while your portable computer is running on battery power; this helps you avoid draining the batteries.
Using the Scheduled Synchronization tab, you can set times for synchronization to occur automatically. Clicking the Add button on this tab will invoke the Scheduled Synchronization Wizard.
With the wizard, you can select a time and day when you want the synchronization to start, and specify how often synchronization should occur. You’ll be asked to give the synchronization job a name, and it will be entered into the list of current synchronization tasks.
Tip: You can manually synchronize an individual file or folder by selecting it in Windows Explorer or My Computer and selecting Tools | Synchronize.

Understanding and resolving file conflicts
If more than one person works with the same offline files, the possibility of file conflicts arises. There can be differing versions of the file to which different modifications have been made.
When you synchronize files, those that you have modified since disconnecting from the network will be compared to the versions of those same files on the network server. Your changes will be copied to the network versions—if no one else modified the network files while you were working offline.
If someone did change the files during that time, a file conflict occurs. Which version should be kept on the network—the one copied to the network while you were offline or the one containing the modifications you made while offline? You’ll be asked to choose one of the following:
• Keep Your Version Of The File
• Keep The Version On The Network
• Keep Both Versions
If you elect to keep both versions, you’ll need to give your version a different name. Both versions will be saved to your local disk and the network server.