# Orthanc Windows 64bit server ?

**URL:** https://discourse.orthanc-server.org/t/orthanc-windows-64bit-server/129
**Category:** Google Groups archive
**Created:** [January 28, 2015, 5:13pm UTC](https://discourse.orthanc-server.org/t/orthanc-windows-64bit-server/129 "2015-01-28T17:13:13Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![Celerity\_Abbottt](https://discourse.orthanc-server.org/letter_avatar_proxy/v4/letter/c/fbc32d/32.png) [@Celerity\_Abbottt](https://discourse.orthanc-server.org/u/Celerity_Abbottt)
#### Post date: [January 28, 2015, 5:13pm UTC](https://discourse.orthanc-server.org/t/orthanc-windows-64bit-server/129/1 "2015-01-28T17:13:13Z")

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Sorry this post is redundant.

I downloaded the Orthanc Windows installer from the [download site](http://www.orthanc-server.com/download-windows.php), and found it looked like a 32bit server. Is there an installer for a pre-built Windows 7/8.1 64bit Orthanc server available?

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### Author: ![jodogne](https://discourse.orthanc-server.org/user_avatar/discourse.orthanc-server.org/jodogne/32/1511_2.png) [@jodogne](https://discourse.orthanc-server.org/u/jodogne)
#### Post date: [January 28, 2015, 7:42pm UTC](https://discourse.orthanc-server.org/t/orthanc-windows-64bit-server/129/2 "2015-01-28T19:42:20Z")

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Hello,

Microsoft does not provide a 64bit version of Visual Studio Express, even for open-source projects. As a consequence, we cannot provide pre-built binaries of Orthanc for Windows 64bit.

However, Orthanc is reported to compile properly using Visual Studio 64bit:  
[https://groups.google.com/d/msg/orthanc-users/tW-\_ZxmiAng/8CClqEtW0tsJ](https://groups.google.com/d/msg/orthanc-users/tW-_ZxmiAng/8CClqEtW0tsJ)  
[https://groups.google.com/d/msg/orthanc-users/kbYj\_o-8gp4/\_Nq87n17UtQJ](https://groups.google.com/d/msg/orthanc-users/kbYj_o-8gp4/_Nq87n17UtQJ)

HTH,  
Sébastien-