method:
Create a txt file named "admin.txt", remember to open the "Display name suffix" .txt asked to see and modify it.
Paste the following code into it.
Windows Registry Editor Version 5.00 [HKEY_CLASSES_ROOT\*\shell\runas]@="管理员取得所有权""NoWorkingDirectory"="" [HKEY_CLASSES_ROOT\*\shell\runas\command]@="cmd.exe /c takeown /f \"%1\" && icacls \"%1\" /grant administrators:F""IsolatedCommand"="cmd.exe /c takeown /f \"%1\" && icacls \"%1\" /grant administrators:F" [HKEY_CLASSES_ROOT\exefile\shell\runas2]@="管理员取得所有权""NoWorkingDirectory"="" [HKEY_CLASSES_ROOT\exefile\shell\runas2\command]@="cmd.exe /c takeown /f \"%1\" && icacls \"%1\" /grant administrators:F""IsolatedCommand"="cmd.exe /c takeown /f \"%1\" && icacls \"%1\" /grant administrators:F" [HKEY_CLASSES_ROOT\Directory\shell\runas]@="管理员取得所有权""NoWorkingDirectory"="" [HKEY_CLASSES_ROOT\Directory\shell\runas\command]@="cmd.exe /c takeown /f \"%1\" /r /d y && icacls \"%1\" /grant administrators:F /t""IsolatedCommand"="cmd.exe /c takeown /f \"%1\" /r /d y && icacls \"%1\" /grant administrators:F /t"
Save as "admin.reg", ready to write to the registry.
Double-click it, writes the registry.