Usually, as long as the properties such as the connection in the LAN and the IP of each computer are set, file sharing can be performed, but in some cases it cannot be completed. What is going on? Don't worry, you can consider the following steps: 1 Check if the guest account is enabled XP does not open the guest account by default, so for others to browse your computer, please enable the guest account. At the same time, for security, please set a password or corresponding permission for the guest. Of course, you can also set a username and password for each machine so that computers can access each other. 2 Check whether the Guest is denied access to the machine from the network. When you open the guest account but still cannot access it at all, please check if the setting is to refuse the guest to access the computer from the network, because XP does not allow the guest to log in from the network by default, so even If you open the guest, you can't access it. Unlock the Guest account when the system Guest user is enabled. Click Start→Run. In the Run dialog box, enter GPEDIT.MSC, open the Group Policy Editor, and select Computer Configuration→Windows. Settings → Security Settings → Local Policies → User Rights Assignment, double-click the “Deny access to this computer from the network” policy, delete the “GUEST” account inside. In this way, other users can use the Guest account to access the computer using Windows XP system through the network. 3 Change the network access mode XP defaults to all users who log in from the network are processed according to the guest account, so even if the administrator logs in from the network, it only has the guest's permission. If it is unable to access, please try to change the network access. mode. Open the Group Policy Editor, select "Computer Configuration→Windows Settings→Security Settings→Local Policies→Security Options", double-click the "Network Access: Sharing and Security Mode for Local Accounts" policy, and set the default setting to "Guest Only - Local Users" Guest Authentication", changed to "Classic: Local users authenticate with their own identity." So even if you don't open the guest, you can log in to the computer you want to access by entering your local account and password. The local account and password are the accounts and passwords already on the computer you want to access. If you need an account and password to access the network, you can log in by entering the account and password already on the computer you want to access. If you do not change the access mode, you may not be able to enter the username and password. //computername/guest is grayed out. Even if the password is empty, you can't make sure to log in without turning on the guest. Change to the classic mode, at least as long as the case of not opening the guest account in 2000, you can enter the user name and password to log in to the computer you want to enter. Maybe you will also encounter a special situation, please see the next one. 4 A noteworthy issue We may also encounter another problem, that is, when the user's password is empty, even if you do all the above changes can not log in, the access will be rejected. This is because, in the system "Security Options", the "Account: Local account with blank password only allows console login" policy is enabled by default. According to the principle of rejecting priority in the Windows XP security policy, the password is empty. Network access is prohibited when using a computer with Windows XP. We just need to disable this strategy to solve the problem. In the security options, find the "Local account with blank password only allows console login" item, disable it, otherwise you can not log in even if you open the guest and change to the classic mode. After the above changes are basically accessible, you can try to choose a method that suits you. Here are some additional questions you might encounter. 5 Network neighbors can't see the computer. You may often not be able to see the computer you want to access in the network neighborhood unless you know the computer's name or IP address, by searching or directly typing //computername or //IP. Please follow the steps below to start the "Computer Browser" service. The Computer Browser Service maintains a list of computer updates on the network and provides this list to computers designated as browsers. If this service is stopped, the list is neither updated nor maintained. 137/UDP--NetBIOS name server, Network Basic Input/Output System (NetBiOS) Name Server (NBNS) protocol is part of the NetBIOS (NetBT) protocol family on TCP/IP, which provides hosts on networks based on NetBiOS name access. Name and address mapping methods. 138/UDP--NetBIOS datagram, NetBIOS datagram is part of the NetBiOS (NetBT) protocol suite on TCP/IP, which is used for network login and browsing. 139/TCP--NetBIOS Session Service, part of the NetBiOS (NetBT) protocol suite on TCP/IP, used for server message block (SMB), file sharing, and printing. Please set the firewall to open the corresponding port. Generally, it is only necessary to allow folder and printer sharing services in the firewall. 6 About sharing mode For shared XP, only the guest permission is given by default or the user is allowed to change "My Files". In the Windows 2000 operating system, users can easily set the shared properties of a folder. Just right-click on the folder and select Properties to see the Sharing Settings tab. When setting up folder sharing in Windows XP system, it is more complicated, and users cannot see the sharing setting label through the above operation. The specific modification method is as follows: Open "Tools" in "My Computer", select "Folder Properties", bring up the "View" tab, scroll to the bottom in the "Advanced Settings" section and "Simple File Sharing (Recommended) "The previous selection is canceled, and if there is a "MickeyMouse" item in the options bar, the selection is also cancelled. After this modification, the user can easily modify the folder properties as with Windows 2000. 7About the problem of non-responsive or slow response with network neighbor access When browsing the network neighborhood in WinXP and Win2000, the system will delay 30 seconds by default. Windows will use this time to search for the remote computer to have the specified scheduled task (even possible) Search in the Internet). If the network does not respond when searching, it will fall into an unrestricted wait, so it is not surprising that the delay of more than 10 minutes is even reported. The following are specific solutions. A: Turn off WinXP's scheduled task service (TaskScheduler) You can open the "TaskScheduler" property dialog box in "Control Panel /Administrative Tools /Services", click the "Stop" button to stop the service, and then set the startup type to "Manual", so the service will not be started automatically the next time you start it. B: Delete individual subkeys in the registry. Locate the main key in the registry: "HKEY_LOCAL_MacHINESOFTWAREMicrosoftWindowsCurrentVersion ExplorerRemoteComputerNameSpace" where the first child determines whether the network neighbor wants to search for printers on the network. The second child determines whether you need to find the specified scheduled task. This is the culprit of the very slow online neighbors. You must delete this child. Summary of knowledge: Can not access mainly because XP does not open the guest by default, and even if the guest is opened, XP does not allow the guest to access the computer from the network by default. There is also a noteworthy question. I believe that some places that do not consider security or computer companies give people a system password is empty, but this is not allowed to log in. As long as you have tried the above methods, I believe that there will be no more problems.