One, the network fault causes (the mobile phone/computer all applies)
If the computer can not access the Internet must not be able to login QQ, this we detect the network or set up a bit of DNS settings to see if it can be resolved.
Second, the Web page can be opened, QQ is not
If you are on the Internet may be the company network management QQ to filter out the Internet, there is your computer fire strong setting is not the QQ application is not allowed to log in.
Third, the account password is not normal
Because QQ account password change or stolen, resulting in QQ login, this situation, other QQ number normal, on their own landing can not. This situation generally prompts the password error, when the input password error too much, QQ number will be locked, users need to modify the password or submit a complaint to resolve.
Four, computer or mobile phone virus or software compatible conflict caused
Poisoning, this problem we can install 360 security guards then to kill, there may be QQ version of the old we upgrade the new version of the QQ software to see.
V. Solutions
1. If the computer has installed QQ computer housekeeper or 360 security guards are OK, below I 僦 to 360 security guards for example.
2. After opening the 360 security guards, we find the "human Service" under the main interface and click on it to open the following interface
3. In the Open "human Service" interface we entered in the search box "QQ Landing" and then click Search, such as the next find scheme click to repair immediately.