Open Visio documents in separate windows:
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1. Open Microsoft Visio
2. Go to Tools -> Options -> Advanced
3. Check the Put all settings in Windows Registry option
4. Close Visio
5. Run Registry Editor (regedit)
6. Navigate to the following registry key:
HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Visio\Application\
7. In the right pane, right click on SingleInstanceFileOpen, and then select Modify.
Update the value of SingleInstanceFileOpen from 1 to 0.
(Create it if it doesn't exist. Use String type and make sure Visio is not running)
Open Excel documents in separate windows:
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1. Open My Computer
2. Click on Tools, then Folder Options
3. Select the File Types tab
4. Scroll down to the XLS extension
5. Select Advanced
6. Select Open
7. Select Edit…
8. in the line that says "Application used to perform action:",
go to the end of the line and add "%1" (that would be %1 WITH double quotes)
so for example it may read something like
"C:\Program Files\Microsoft Office\Office12\EXCEL.EXE" /e "%1"
9. uncheck Use DDE
10. Do not make any other changes
11. Click OK and click OK again
(note: if you go back into advanced and back into the open action, you will notice DDE is checked again, however the DDE message is blank; this is fine.)
12. Now scroll down to XLSX
13. repeat steps 5 through 11 above
14. Click on Close
15. Now, when you click on Microsoft Excel 2007 spreadsheets, they will open separate windows for each Microsoft Excel 2007 spreadsheet that is launched.
Note: Microsoft Excel 2007 spreadsheet windows will open on top of eachother, so you will have to drag the windows in order to see them.