For help, my computer cannot be connected to the Internet .. Thank you .. Come on !!

For help, my computer cannot be connected to the Internet .. Thank you .. Come on !! -- Linux general technology-Linux technology and application information. For details, refer to the following section. Ladies and Gentlemen:
Recently, I have connected two computers in my house into a LAN, IP address, and Working Group, computer A is WIN, computer B is LINUX. The strange thing is that when computer 1 is used, you can enter the shared files of computer 2 at will, but when computer 2 is used, you cannot enter the shared files of Computer 1, you can see two machines in the Working Group. When using computer 2, you can click the computer 1 icon in the network neighbor. A dialog box is displayed: "The login type of this computer on Computer 1 has not been granted!" The network settings of the two computers are similar and can be pinged to each other. Which of the following is my hope to enlighten me? Thank you very much.


Thank you .. Come on !!