Using OfficeWriter .NET on a 64-bit machine

What version of OfficeWriter do I need for 64-bit support?

  • Full 64-bit support for OfficeWriter’s pure .NET classes was introduced in OfficeWriter 3.9.1 (ExcelWriter 6.9.1). The OfficeWriter .NET dlls are compiled with the /anycpu flag so they will work fine on either 32-bit or 64-bit systems.
  • OfficeWriter’s COM dlls are still 32-bit. If you have old ASP.NET applications that are still using the .NET wrapper classes for ExcelWriter COM, you will need to run those applications in a 32-bit application pool or change your code to use the pure .NET objects. See Using OfficeWriter COM.

What is the difference between the 32-bit and 64-bit installers?

  • There are no significant differences between OfficeWriter’s 32-bit and 64-bit installers. Both contain the same .NET dlls which are compatible with both 32-bit and 64-bit systems.
  • The 64-bit installer will create the OfficeWriter program folder in Progam Files rather than Program Files (x86)
  • You can run the 32-bit installer on a 64-bit OS. However if you are installing OfficeWriter in SSRS integration mode, the 32-bit installer may have trouble finding a 64-bit instance of SSRS.
  • There is no problem manually deploying files from a 32-bit installation to a 64-bit machine

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