The MAC verification error is caused by the out-of-synchronization of the keys between the bank and the securities company. You should initialize the key on the securities communication machine, and then contact the bank's technical staff and ask the other party to also initialize the key. Just sign in again.

——MAC address verification failed, what should I do?

1. Turn on the computer and check the IP and gateway: start--run--cmd. Type ipconfig/all in the command line to check the IP and gateway. If the ping gateway is successful, then type the arp -a command. Check the binding status of mac address and ip; 2. Change the MAC address of the current computer to the original MAC address; 3. Go to the network center to unbind.

The MAC address binding error usually occurs when using Ruijie client to log in to the Internet. MAC is the physical address of the computer network card. It usually occurs when changing computers and using a Ruijie account to access the Internet. Since it is different from the MAC address used to log in to the server when accessing the Internet for the first time, the system will prompt a MAC binding error.

Two methods: 1. Contact the network provider or the school network center to unbind the MAC. 2. Use tools to modify the MAC address of the machine so that it is the same as the original computer MAC address.

How to manually modify the MAC address: If you want to modify the MAC address of the network card, there are many softwares that can do it. What I want to tell you today is to manually modify the MAC address of the network card under the operating system. It is very useful. .

——What should I do if my Mac cannot partition because the file system verification failed?

1. When encountering the above situation, it is because the internal file system of the Mac OS system has an error during verification, resulting in the inability to merge the free partition into the Mac OS partition. At this time, please restart your Mac system. When restarting, please hold down the Command S key on the keyboard to enter safe mode. If it doesn't work, try a few more times and press it before you hear the sound again.

2. Then you will see a string of words jumping on the screen. When it stops, press the "Enter" key on the keyboard, and the command prompt will appear, as shown in the picture

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3. Then enter the fsck -f command and press the "Enter" key on the keyboard to execute the command.

4. Please wait for the file system to be repaired. The speed of repair will depend on the speed of the hard disk, as shown in the figure.

5. When the repair is completed, you will see the prompt " "The volume Macintosh HD was reaired successfully", it means it has been successful, as shown in the figure

6. Next, please enter the reboot command to restart the computer in safe mode.

7. After restarting, open Disk Utility and merge the partitions.