By default, Windows XP's local security settings require users to use users allocated. At the same time, the user rights assignment in the Windows XP Security Policy is prohibited from accessing the system through the network. Those two mutually contradictive security strategies have led to other users within the network to access the Windows XP's computer through the network. You can solve the following methods. Method 1 To release the restriction of the guest account Click "Start → Run", enter "GPEDIT.MSC" in the "Run" dialog, open the Group Policy Editor, and select Computer Configuration → Windows Settings → Security Settings → Local Policy → User Right Assignment, Double-click "Reject to Access this computer" policy (see figure), delete the "guest" account inside. This other users can use the guest account to access the computer using the Windows XP system over the network. Method 2 Change Network Access Mode Open Group Policy Editor, select Computer Configuration → Windows Settings → Security Settings → Local Policy → Security Options ", double-click Network Access: Local Account Sharing and Security Mode" Policy, will set the default settings " Only guests - local users have passed the guest authentication ", change to" Classic: Local users with their own authentication ". Now, when other users accesses the computer using Windows XP via the network, they can log in with their own "identity" (provided that this account in Windows XP is correct and the password is correct). When the policy changes, the file sharing method has changed, and after enabling "Classic: Local User With your own authentication" mode, we can limit the number of users who simultaneously access the shared file and can set different users. Access permission. However, we may also encounter another problem. When the user's password is empty, the access will still be rejected. It turns out that there is an "account: the local account using the blank password" policy is allowed to enable it by default, and the user who refuses the priority in the Windows XP security policy, the password is empty by network access It is disabled when using Windows XP. We will solve the problem as long as we stop this strategy. 98. Usually we are very convenient to access the shared resources of Windows 98, do not need to enter a password (if you don't set a password). But when accessing the shared file on the Windows 2000 system, we ask us to enter a password, but we may not set a password at all, so that some people feel very strange, don't know what to do. In fact, this is normal because the security of Windows 2000 is much higher than Windows 98, so you need to set sharing permissions when sharing. We can solve this problem by the following approach: 1. Open the "Guest" account of Windows 2000, and other computer access you will not need a password. But as follows is that your Windows 2000's security is similar to 98. The method is as follows: Control Panel - User and Password - Advanced - Advanced (V) - There should be a fork, right-key - property. 2. You can create an account in Windows 2000 and set your password, and then give this account appropriate permissions when you share. This will be available in other computers. 3. Establish "Incoming Connection". "Incoming Connection" is actually connected to this machine directly to make other computers using telephone lines, Internet or cables. The establishment method is as follows. Right click on "Online Neighbors", open the property, then create a new connection, open the Network Connection Wizard.