set "string1=action: Uninstall"
set "string2=Exit code: 0x0, restarting: No"
set "files=C:\Users\ADMINI~1\AppData\Local\Temp\Micro*.log"
findstr /m /c:"%string1%" "%files%" | findstr /f:/ /m /c:"%string2%"
Get the list of files that contain the first string and use this list to search the second string.