How to cancel the dll file association method in Win7

  
1. First open the run, enter "ldedit" to open the registry editor (this involves modifying the registry, for security reasons it is recommended to back up the registry first);

2, then expand and navigate to HKEY_CURRENT_USERSoftwareMicrosoftWindowsCurrentVersionExplorerFileExts. Dll;
3, in addition to the OpenWithProgids key value, delete the other item values, this will not affect your computer, and then restart the computer to take effect.
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