Frequently Asked Questions

Computers running 64-bit versions of Windows generally have more resources such as processing power and memory, than their 32-bit predecessors. Also, 64-bit applications can access more memory than 32-bit applications (up to 18.4 million Petabytes). Therefore, if your scenarios include large files and/or working with large data sets and your computer is running 64-bit version of Windows, 64-bit is the right choice when:
  • You’re working with large data sets
  • You’re working with extremely large pictures, videos, or animations in PowerPoint
  • You’re working with files over 2 GB in Project
  • You’re developing in-house Office solutions
  • You’re working with the Large Number data type in Access
Note: If you have 32-bit Windows, you can only install 32-bit Office. If you have 64-bit Windows, you can install both 32-bit Office and 64-bit Office. 32-bit version of Office is still the best choice for you if:
  • You have 32-bit COM Add-ins with no 64-bit alternative
  • You use 32-bit controls with no 64-bit alternative
  • Your VBA code uses Declare statements
  • You have 32-bit MAPI applications for Outlook
  • You’re activating a 32-bit OLE server or object
  • You're using SharePoint Server 2010 and you need the Edit in Datasheet view
  • You need 32-bit Microsoft Access .mde, .ade, and .accde database files
  • You require Legacy Equation Editor or WLL (Word Add-in libraries) files in Word
  • You have an old embedded media file in your PowerPoint presentation with no available 64-bit codec.