How the WIN8 system changes the way an XML file is opened to an unknown file

How do you turn an XML file into an unknown file when you open it using the default program and then use the default method each time you open it? The following small series to introduce you to the WIN8 system how to open the XML file to an unknown file.

1. First, we need to determine the SID number of the current account number;

2. You can press the Windows key plus the X key on the traditional desktop, then press R, then enter regedit, then press ENTER. Confirm the SID number of each account in the following key value;

(HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindows ntcurrentversionprofilelist.) )

3. Second, by regshot the key value, you can use the following actions to make it an unknown file.

4. If the XML file is opened by default to Notepad (other ways can make appropriate changes), you can try to delete the following registry file (Note: s-1-5-21-3452318729-4151646049-3877892598-1004 is the SID of the current account). Different accounts have different SID numbers):

(Hkus-1-5-21-3452318729-4151646049-3877892598-1004softwaremicrosoftwindowscurrentversionexplorerfileexts.xml)

(Hkus-1-5-21-3452318729-4151646049-3877892598-1004softwaremicrosoftwindowsroamingopenwithfileexts.xml)

(Hkus-1-5-21-3452318729-4151646049-3877892598-1004softwaremicrosoftwindowscurrentversionapplicationassociationtoastsappli Cationsnotepad.exe_. xml:0x00000000)

5. When the above three key values are deleted, the file becomes an unknown file again.