Win7 system Open File Security Warning What's going on?

Win7 system Open File Security Warning What's going on?

The workaround is as follows:

1, first press the combination of key Win+r open the running window, input cmd and return, as shown:

2. Open the Command Prompt window at this time and paste the following code into it (of course, manual input is OK.) )：

REG ADD hkcusoftwaremicrosoftwindowscurrentversionpoliciesassociations/v modriskfiletypes/t reg_sz/d exe;. BAT;. Vbs/f, as shown in the picture:

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3, input finished, press ENTER to execute, we can see the operation of the successful completion of the prompt, and then continue to enter the Gpupdate/force command, as shown in the figure:

4, after the final input completed, wait for the successful operation of the command prompt to close the window can be, as shown in the picture: