Usually there will be prompts when logging into the system, such as incorrect password, expired certificate, etc.

If there is no response when you click to log in, it may be that your network speed is too slow. You have not received a response after clicking submit, so you stay on the original interface. You can check other websites such as Sina. If other websites open very slowly, it is a problem with your network speed.

If the Internet speed of other computers in your company is okay, but the Internet speed of your computer is slow, you should focus on checking whether your computer is infected with viruses or Trojan horses. If it is infected with viruses or Trojan horses, the solution is to kill the virus.