How does Win8 system change the opening method of xml file to unknown file

After the XML document is opened with the default program, the default method is used every time you open it. How to change the opening method of the xml file to an unknown file? The following is a small series to introduce how the Win8 system changes the opening method of the xml file. For unknown files.

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

2. On the traditional desktop, press the Windows key plus the X key, then press the R key, then enter regedit, Then press Enter. Confirm the SID number of each account in the following key values;

(HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindows NTCurrentVersionProfileList.)

3. Secondly, grab the key value through regshot, after the comparison, you can press the following operation to make It becomes an unknown file.

4. If the xml file is opened by default as Notepad (other methods can be changed appropriately), 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, and the SID numbers of different accounts are different):

(HKUS-1-5-21-3452318729-4151646049-3877892598-1004SoftwareMicrosoftWindowsCurrentVersionExplorerFileExts.xml)

(HKUS-1 -5-21-3452318729-4151646049-3877892598-1004SoftwareMicrosoftWindowsRoamingOpenWithFileExts.XML)

(HKUS-1-5-21-3452318729-4151646049-3877892598-1004SoftwareMicrosoftWindowsCurrentVersionApplicationAssociationToastsApplicationsNOTEPAD.EXE_.XML: 0x00000000)

5. When the above three key values ​​are deleted, the file will become an unknown file again.