imex=1 로 Text로 읽지 못할때
https://docs.microsoft.com/en-us/office/client-developer/access/desktop-database-reference/initializing-the-microsoft-excel-driver?tabs=office-2016
For 32-bit Office on 32-bit Windows or 64-bit Office on 64-bit Windows:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\ClickToRun\REGISTRY\MACHINE\Software\Microsoft\Office\16.0\Access Connectivity Engine\Engines\Excel
For 32-bit Office on 64-bit Windows:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\ClickToRun\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Office\16.0\Access Connectivity Engine\Engines\Excel