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Account lockout policy options disable accounts after a set number of failed logon attempts. Using these options can help you detect and block attempts to break passwords. To modify lockout policy settings, launch Local Security Policy or Group Policy and go to Computer Configuration\Windows Settings\Security Settings\Account Policies\Account Lockout Policy.

Account lockout threshold. The number of failed logon attempts before a user account is locked out. A locked-out account cannot be used until an administrator resets it or until the account lockout duration expires. You can set values from 1 through 999 failed logon attempts, or you can specify that the account is never locked out by setting the value to 0.

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This setting is disabled (set to zero invalid logon attempts) in the Default Domain Group Policy object and in Local Security Policy for workstations and servers. You must change this to enable lockout after a specified number of attempts. Unsuccessful attempts to log on to workstations or member servers that have been locked using either CTRL+ALT+DEL or password-protected screen savers do not count as failed logon attempts under this policy setting. Failed attempts to log on remotely do count.

Files are also deleted from the cache whenever an offline file is deleted by using a normal user path, such as Windows Explorer, My Computer, the Run dialog box, or the command prompt. When users verify that they want to delete a file, the file is removed from the cache. This is not an effective way to clean up the cache because it also deletes files in the shared network folder. However, the files are deleted immediately only if the associated network share is online. If the share is offline, the local copy is deleted and the Synchronization Conflict notification is displayed during the next interactive synchronization.

Whenever you log on to Windows XP, Windows Messenger attempts to automatically sign in. Windows Messenger will not launch an Internet connection, however, so if you are not connected when Windows Messenger attempts to log on, the logon will fail. You will also see the Windows Messenger icon with an X over it in the notification area. If you do not want Windows Messenger to attempt to log you on whenever you log on to Windows XP, follow these steps:

During normal operation, you delete cached files by using the procedure shown in Deleting Files from the Offline Files Folder earlier in this chapter. However, if normal methods of deleting files are unsuccessful, you might need to reinitialize. Reinitializing deletes all offline files in the folder and resets the Offline Files database. If any files in the cache are changed and not synchronized with the network versions, the changes are lost when the cache is reinitialized. You must restart the computer to complete the reinitialization. To reinitialize the Offline Files cache 1. Click a folder, and then on the Tools menu, click Folder Options. 2. Click the Offline Files tab. 3. Press CTRL+SHIFT, and then click Delete Files. 4. Restart the computer. Caution You cannot undo the effects of reinitialization. After the cache is reinitialized, all offline files are permanently removed from the computer.

private void saveFileDialog1_FileOk(object sender, CancelEventArgs e) { // By using the using statement, not to be confused with the using // directive on top of the file, we are making sure that if an