System Admin

for /f "tokens=2" %%g in ('date /t') do set datesplit=%%g

set mm=%datesplit:~0,2%
set dd=%datesplit:~3,2%
set yyyy=%datesplit:~6,4%

echo %mm%
echo %dd%
echo %yyyy%

set /A dd=%dd% - 1
set /A mm=%mm% + 0

if /I %dd% GTR 0 goto FINISH
set /A mm=%mm% - 1
if /I %mm% GTR 0 goto ADJUST
set /A mm=12
set /A yyyy=%yyyy% - 1

:ADJUST
if %mm%==1 goto SET31
if %mm%==2 goto LEAPCHK
if %mm%==3 goto SET31
if %mm%==4 goto SET30
if %mm%==5 goto SET31
if %mm%==6 goto SET30
if %mm%==7 goto SET31
if %mm%==8 goto SET31
if %mm%==9 goto SET30
if %mm%==10 goto SET31
if %mm%==11 goto SET30
if %mm%==12 goto SET31
goto ERROR

:SET31
set /A dd=31 + %dd%
goto FINISH

:SET30
set /A dd=30 + %dd%
goto FINISH

:LEAPCHK
set /A tt=%yyyy% %% 4
if not %tt%==0 goto SET28
set /A tt=%yyyy% %% 100
if not %tt%==0 goto SET29
set /A tt=%yyyy% %% 400
if %tt%==0 goto SET29

:SET28
set /A dd=28 + %dd%
goto FINISH

:SET29
set /A dd=29 + %dd%

:FINISH
if /i %dd% LSS 10 set dd=0%dd%
if /I %mm% LSS 10 set mm=0%mm%

rem here you can format how you like, from above it should be
set YESTERDAY=%mm%-%dd%-%yyyy%
echo %YESTERDAY%

net stop iisadmin /y