Solve win7 open file prompts Windows can not open this file

1, first click "start-run", enter "ldedit" in the open run dialog box to enter the registry editor;

2 Then on the left side of the registry, expand to the "HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindowsCurrentVersionpoliciessystem" option;

3, then right-click in the space on the right side of the window to select “New ”→DWORD value“, and Name it "Nointernetopenwith";
4, then double-click the newly created "Nointernetopenwith" key value, in the "DWORD value" dialog box, the "Digital Data" item is turned on. 0 can be changed to 1 or other non-zero numbers.
5, after the modification is completed, it is determined to quit and close the registry, and then open the file of unknown format will not prompt Windows can not open this file, but will go directly to the open mode dialog box, select the corresponding program to open the file Just fine.