# "Nexus 3D Viewer" button not showing on Explorer.html if Orthanc is on an ApacheServer

**URL:** https://discourse.orthanc-server.org/t/nexus-3d-viewer-button-not-showing-on-explorer-html-if-orthanc-is-on-an-apacheserver/5236
**Category:** General
**Created:** [October 8, 2024, 2:50pm UTC](https://discourse.orthanc-server.org/t/nexus-3d-viewer-button-not-showing-on-explorer-html-if-orthanc-is-on-an-apacheserver/5236 "2024-10-08T14:50:12Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![ypollet](https://discourse.orthanc-server.org/letter_avatar_proxy/v4/letter/y/d78d45/32.png) [@ypollet](https://discourse.orthanc-server.org/u/ypollet)
#### Post date: [October 8, 2024, 2:50pm UTC](https://discourse.orthanc-server.org/t/nexus-3d-viewer-button-not-showing-on-explorer-html-if-orthanc-is-on-an-apacheserver/5236/1 "2024-10-08T14:50:12Z")

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We just noticed that if we are hosting Orthanc on an Apache server.  
With a simple rule in the .conf file :  
ProxyPass “/orthanc/” “[http://localhost:8042/](http://localhost:8042/)”  
ProxyPassReverse “/orthanc/” “[http://localhost:8042](http://localhost:8042)”

The button “Nexus 3D Viewer” disappears of the explorer.html (for dicomized Nexus files).  
Even though, it still appears if I put “localhost:8042” on the url.

However, the API links to the viewers works without a problem.

Does someone have an idea of what could be the problem here?

Thank you very much

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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: [October 15, 2024, 12:47pm UTC](https://discourse.orthanc-server.org/t/nexus-3d-viewer-button-not-showing-on-explorer-html-if-orthanc-is-on-an-apacheserver/5236/2 "2024-10-15T12:47:37Z")

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Hello,

This issue should be fixed [by the following patch](https://orthanc.uclouvain.be/hg/orthanc-stl/rev/ad9950628b35).

Kind Regards,  
Sébastien-