Excel

Make Excel use Multiple Instances... like it should

This will fix the stupid Yeah, I can't open that because it's got the same name as another file that's already open.

Only allowing one open file with a given name is a key requirement of the following:

Use_Multi_Inst.reg

Windows Registry Editor Version 5.00
 
[HKEY_CLASSES_ROOT\Excel.Sheet.8\shell\Open\command]
@="\"C:\\Program Files (x86)\\Microsoft Office\\Office15\\EXCEL.EXE\" /dde \"%1\""
"command"=-
 
[-HKEY_CLASSES_ROOT\Excel.Sheet.8\shell\Open\ddeexec]
 
[HKEY_CLASSES_ROOT\Excel.Sheet.12\shell\Open\command]
@="\"C:\\Program Files (x86)\\Microsoft Office\\Office15\\EXCEL.EXE\" /dde \"%1\""
"command"=-
 
[-HKEY_CLASSES_ROOT\Excel.Sheet.12\shell\Open\ddeexec]

Use_One_Inst.reg

Windows Registry Editor Version 5.00
 
[HKEY_CLASSES_ROOT\Excel.Sheet.8\shell\Open\command]
@="\"C:\\Program Files (x86)\\Microsoft Office\\Office15\\EXCEL.EXE\" /dde"
"command"=hex(7):79,00,68,00,31,00,42,00,56,00,35,00,21,00,21,00,21,00,21,00,\
  21,00,21,00,21,00,21,00,21,00,4d,00,4b,00,4b,00,53,00,6b,00,45,00,58,00,43,\
  00,45,00,4c,00,46,00,69,00,6c,00,65,00,73,00,3e,00,6c,00,56,00,57,00,41,00,\
  28,00,54,00,56,00,6b,00,4d,00,41,00,49,00,53,00,35,00,44,00,68,00,5d,00,33,\
  00,6e,00,56,00,4f,00,20,00,2f,00,64,00,64,00,65,00,00,00,00,00
 
[HKEY_CLASSES_ROOT\Excel.Sheet.8\shell\Open\ddeexec]
@="[open(\"%1\" /ou \"%u\")]"
 
[HKEY_CLASSES_ROOT\Excel.Sheet.8\shell\Open\ddeexec\application]
@="Excel"
 
[HKEY_CLASSES_ROOT\Excel.Sheet.8\shell\Open\ddeexec\topic]
@="system"
 
[HKEY_CLASSES_ROOT\Excel.Sheet.12\shell\Open\command]
@="\"C:\\Program Files (x86)\\Microsoft Office\\Office15\\EXCEL.EXE\" /dde"
"command"=hex(7):79,00,68,00,31,00,42,00,56,00,35,00,21,00,21,00,21,00,21,00,\
  21,00,21,00,21,00,21,00,21,00,4d,00,4b,00,4b,00,53,00,6b,00,45,00,58,00,43,\
  00,45,00,4c,00,46,00,69,00,6c,00,65,00,73,00,3e,00,6c,00,56,00,57,00,41,00,\
  28,00,54,00,56,00,6b,00,4d,00,41,00,49,00,53,00,35,00,44,00,68,00,5d,00,33,\
  00,6e,00,56,00,4f,00,20,00,2f,00,64,00,64,00,65,00,00,00,00,00
 
[HKEY_CLASSES_ROOT\Excel.Sheet.12\shell\Open\ddeexec]
@="[open(\"%1\" /ou \"%u\")]"
 
[HKEY_CLASSES_ROOT\Excel.Sheet.12\shell\Open\ddeexec\application]
@="Excel"
 
[HKEY_CLASSES_ROOT\Excel.Sheet.12\shell\Open\ddeexec\topic]
@="system"