Del-Air  TAB  Software

Specializing in software for the HVAC Testing & Balancing industry



Windows 7


The exact steps and names of the items listed below, may vary slightly,

depending upon the operating system and Excel version you are running.

  1. Click "Start" - which is the orb in the lower left corner of your desktop with the windows logo inside.
  2. Click "Control Panel"
  3. Double click "Programs" or "Programs and Features"
  4. Click "Uninstall"
  5. Scroll through the list of programs until you find "Microsoft Office" or "Microsoft Excel".
  6. Right click on the "Office" or "Excel" program that is in your list.
  7. Click the "Change" button.  This should open the installation window for "Office" or "Excel"
  8. Select "Add or Remove Features"
  9. Click "Continue"
  10. Click the "+" sign next to Microsoft Excel
  11. Click the downward pointing triangle next to .Net Programmability Support
  12. Click on "Run From My Computer"
  13. Click "Continue"

This will install the .Net Support that is need for our program to function.

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