How can the win7 system not access the workgroup computer?

First open the control panel, click Add or delete user accounts in User Accounts and Family Security.

Click on the guest account and open it.

Then enter the local security policy, click Security Settings ——Local Policies——User Rights Assignment, click to access this computer from the network.

Click Add User or Group in the Properties window for accessing this computer from the network.

Continue to click the Advanced button.

Click Find Now to find the guest account.

Delete the guest account in the Deny access to this computer properties window.

Then go back to your local security policy, click on Local Policies —— Security Options, click on Network Access: Local Account Sharing and Security Model.

Set the property to classic.