You're activating a 32-bit OLE server or object. To learn about preparing Outlook applications for both 32-bit and 64-bit platforms, see Building MAPI Applications on 32-Bit and 64-Bit Platforms and the Outlook MAPI Reference. With a growing number of 64-bit Outlook customers, rebuilding 32-bit MAPI applications, add-ins, or macros for 64-bit Outlook is the recommended option, but if needed you can continue to run them with 32-bit Outlook only, as well. You have 32-bit MAPI applications for Outlook. For more information about what VBA changes are needed to make it run on 64-bit Office, see 64-Bit Visual Basic for Applications Overview. However this might not be possible in rare cases where there is no 64-bit API to Declare. In most cases, adding PtrSafe to the Declare and replacing long with LongPtr will make the Declare statement compatible with both 32- and 64-bit.
#IS EXCEL 2017 FOR MAC 32 OR 64 BIT CODE#
Your VBA code uses Declare statements Most VBA code doesn't need to change when using in 64-bit or 32-bit, unless you use Declare statements to call Windows API using 32-bit data types like long, for pointers and handles. You can continue to run 32-bit controls in 32-bit Office like Microsoft Windows Common Controls (Mscomctl.ocx, comctl.ocx), or any existing 3rd-party 32-bit controls. You use 32-bit controls with no 64-bit alternative. You can also try contacting the COM Add-in vendor and requesting a 64-bit version.
You can continue to run 32-bit COM add-ins in 32-bit Office on 64-bit Windows. You have 32-bit COM Add-ins with no 64-bit alternative. IT Professionals and developers in particular, should also review the following situations where the 32-bit version of Office is still the best choice for you or your organization.
#IS EXCEL 2017 FOR MAC 32 OR 64 BIT INSTALL#
If you have 64-bit Windows, you can install 32-bit Office or 64-bit Office. Note: If you have 32-bit Windows, you can only install 32-bit Office. In-house Office solution developers should have access to the 64-bit Office 2016 for testing and updating these solutions. Using the 64-bit version of Office lets you deliver a 64-bit version of those solutions as well as a 32-bit version. You're developing in-house Office solutions like add-ins or document-level customization. You're working with files over 2 GB in Project, especially if the project has many sub-projects. The 64-bit version of Office may be better suited to handle these complex slide decks.
You're working with extremely large pictures, videos, or animations in PowerPoint. See, Excel specifications and limits, Data Model specification and limits, and Memory usage in the 32-bit edition of Excel. The 64-bit version of Office may perform better in these cases. You're working with large data sets, like enterprise-scale Excel workbooks with complex calculations, many pivot tables, data connections to external databases, Power Pivot, 3D Map, Power View, or Get & Transform. 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: Also, 64-bit applications can access more memory than 32-bit applications (up to 18.4 million Petabytes).
Computers running 64-bit versions of Windows generally have more resources such as processing power and memory, than their 32-bit predecessors.
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