Method one, thoroughly find the system installation program, check the software for conflicts, if any, uninstall And clear the registry, and then re-install with administrator privileges;
Method 2, use third-party software to clean the registry, first open 360 click on the computer to clean up there is a cleanup registry open click to clean, delete Restart the computer after the registry, then download a new version of QQ from Tencent's official website, and then re-install it.
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