I can't get on QQ, what should I do?

One: the QQ file of your machine is damaged, and it is useless for you to reinstall it, because the installation of QQ will record the same paragraph and cover your original price. Watch some files, not all. Solution: Delete the folder of your QQ number completely, and then log in. Two: The second situation is that your local area network P2P surpasses you, haha. Maybe I'm joking with you. It can restrict you from logging into QQ or surfing the Internet or your network traffic. This is an annoying but very interesting software, which wants you to log in and log out. I have anti-P2P attack software here, and I can send it to you. Third: You are infected with a virus or denied login by your custom firewall rules. I suggest you check the virus and the definition of your firewall rules. In all three cases, you can log in to QQ on your classmate's machine and download his QQ to yours. Be flexible. Supplement: There are three buttons at the bottom of QQ login interface. There is a test to check whether you can connect to the QQ server. If you can surf the internet normally, there is no reason to go online. In that case, 100% will be P2P.