#Lockdown XLSB
#Run command prompt as administrator
#Then double-click a non-threatening test.xlsb file.  Make a new text file and call it test.xlsb and put the word hello in it, Save as "test.xlsb"
assoc .xlsb=xlsbxfile
ftype xlsbxfile=%SystemRoot%\system32\NOTEPAD.EXE %1
#You may have to right click on the test.xlsb file, Properties, Change to notepad



#Undo Lockdown XLSB
#Run command prompt as administrator
assoc .xlsb=Excel.SheetBinaryMacroEnabled.12
#You may have to right click on the test.xlsb file, Properties, Change to Excel