When designing a BizTalk Server environment, performance is often the top priority. One of the most common questions I receive is regarding 64-bit support. There is often confusion between running BizTalk on a 64-bit OS and the engine’s ability to actually execute as a native 64-bit process.
To clear this up, I have summarized the 64-bit capabilities for every version of BizTalk Server from 2006 to 2020.
📝 One-Minute Brief
This technical guide provides a definitive summary of 64-bit support across all BizTalk Server versions (from legacy 2000 to modern 2016). It clarifies the critical distinction between running BizTalk on a 64-bit Operating System versus Native 64-bit Execution support for specific editions like Standard, Enterprise, and Developer. This is an essential reference for architects planning high-performance integration environments.
The following table describes 64-bit support for the different versions and editions of BizTalk Server:
| 64-bit Operating System Support | Native 64-bit Execution Support | |
| BizTalk Server 2000 | No Editions | No Editions |
| BizTalk Server 2002 | No Editions | No Editions |
| BizTalk Server 2004 | No Editions | No Editions |
| BizTalk Server 2006 | All Editions | Enterprise Edition Standard Edition Developer Edition Branch Edition Evaluation Edition Note: The Standard Edition is supported for native 64-bit execution. |
| BizTalk Server 2006 R2 | All Editions | Enterprise Edition Developer Edition Branch Edition Evaluation Edition Note: The Standard Edition is not supported for native 64-bit execution. |
| BizTalk Server 2009 | All Editions | Enterprise Edition Standard Edition Developer Edition Branch Edition Evaluation Edition Note: The Standard Edition is supported for native 64-bit execution. |
| BizTalk Server 2010 | All Editions | Enterprise Edition Standard Edition Developer Edition Branch Edition Evaluation Edition Note: The Standard Edition is supported for native 64-bit execution. |
| BizTalk Server 2013 | All Editions | Enterprise Edition Standard Edition Developer Edition Branch Edition Evaluation Edition Note: The Standard Edition is supported for native 64-bit execution. |
| BizTalk Server 2013 R2 | All Editions | Enterprise Edition Standard Edition Developer Edition Branch Edition Evaluation Edition Note: The Standard Edition is supported for native 64-bit execution. |
| BizTalk Server 2016 | All Editions | Enterprise Edition Standard Edition Developer Edition Branch Edition Evaluation Edition Note The Standard Edition is supported for native 64-bit execution. |
Original source from Microsoft Help and Support: http://support.microsoft.com/kb/926628
Running BizTalk as a native 64-bit process allows the Host instances to address virtually unlimited memory (well beyond the 2GB/4GB limit of 32-bit processes). This is crucial for:
- Large Message Processing: Handling high-volume or oversized XML files.
- Memory-Intensive Orchestrations: Complex workflows that hold state in memory.
- High-Performance Mapping: Reducing garbage collection overhead during massive transformations.
Important Limitations
Legacy Versions: BizTalk 2000, 2002, and 2004 do not support 64-bit architectures in any capacity.
32-bit Only Adapters: Some legacy adapters (like certain versions of the SAP or Oracle adapters) still require a 32-bit host instance. In these cases, even on a 64-bit server, you must configure a specific 32-bit Host.
Hope you find this helpful! If you liked the content or found it useful and would like to support me in writing more, consider buying (or helping to buy) a Star Wars Lego set for my son.
The last three post has all been very nice rundowns of version- and support info. Great for reference.
Keep it up.
Nice breakdown.